diff --git a/views/DE/404.pug b/views/DE/404.pug
index c4178253b9cec40907906ccd33fc39ac6e85c990..28d105ae7464ac0ecc218d73ad5b6f5a0d65f825 100644
--- a/views/DE/404.pug
+++ b/views/DE/404.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "404 - Page not found"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     style.
       .container { 
         height: 400px;
diff --git a/views/DE/500.pug b/views/DE/500.pug
index 704573397c7252fc0a8034428da47602afa9b994..b18e630cbae156b148b0a831253d57ea342744ec 100644
--- a/views/DE/500.pug
+++ b/views/DE/500.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "500 - Internal Server Error"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     style.
       .container { 
         height: 400px;
diff --git a/views/DE/account/contact.pug b/views/DE/account/contact.pug
index 25e4dc9c402ef556088b707e1bbe2ce99b41c2a5..ddf00d4f930fe91f48e285a041829e90ff3d5a63 100644
--- a/views/DE/account/contact.pug
+++ b/views/DE/account/contact.pug
@@ -4,12 +4,12 @@ html(lang="de")
     title= "Kontakt"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", type="text/css", href="/css/bootstrap.min.css")
     link(rel="stylesheet", type="text/css", href="/fonts/ionicons.min.css")
     link(rel="stylesheet", type="text/css", href="/css/Contact-Form-Clean.css")
     link(rel="stylesheet", type="text/css", href="/css/Testimonials.css")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/custom/login.css")
+    link(rel="stylesheet", type="text/css", href="/css/custom/login.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/DE/account/forgotPwd.pug b/views/DE/account/forgotPwd.pug
index 46210a02d8c8cbbafed3ed8e9b65b3c086ad8246..a0e333baf44847958156baea212cfcdc9b1c98ee 100644
--- a/views/DE/account/forgotPwd.pug
+++ b/views/DE/account/forgotPwd.pug
@@ -4,8 +4,8 @@ html(lang="de")
     title= "Forgot Password"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/custom/login.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/custom/login.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/DE/account/home.pug b/views/DE/account/home.pug
index f20eafc9d6024dfe8166a50bcb384cb244bafccc..0d42723272db9b6ae98ae1e784d4556eaf0e4631 100644
--- a/views/DE/account/home.pug
+++ b/views/DE/account/home.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "User Account"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
   body
     div(class="container")
diff --git a/views/DE/account/profile.pug b/views/DE/account/profile.pug
index e66e4eca1c96132143b9c1a748d4b849ae4d3b22..5ea7640ab479d2bb4d80c4476ae65f8aba83410b 100644
--- a/views/DE/account/profile.pug
+++ b/views/DE/account/profile.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "User Profile"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
   body
     div(class="container")
diff --git a/views/DE/account/registration.pug b/views/DE/account/registration.pug
index dc42f50cf8f59a9e73aa85130865fb444d450a5c..5d169e73d02c62ab8ddd446c6ac24f4918537ba3 100644
--- a/views/DE/account/registration.pug
+++ b/views/DE/account/registration.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Create New Account"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .warning {
diff --git a/views/DE/account/reset.pug b/views/DE/account/reset.pug
index 56aa2d9220f06e178f93b0f985d187d61938828c..ede0800cc345623aed1008a13953d2796e5dd628 100644
--- a/views/DE/account/reset.pug
+++ b/views/DE/account/reset.pug
@@ -4,8 +4,8 @@ html(lang="de")
     title= "Reset Password"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/custom/login.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/custom/login.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/DE/account/security.pug b/views/DE/account/security.pug
index e768359c75871d1557fad63867f6410c4f840e69..d060e233172473f1626c71af91290f8d61bac012 100644
--- a/views/DE/account/security.pug
+++ b/views/DE/account/security.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "User Profile"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .warning {
diff --git a/views/DE/account/services.pug b/views/DE/account/services.pug
index cb911250541d474dc3d46878a7616cfdac3c81b9..bb9dba43c55e48ca14aceee18670ff01aec648ba 100644
--- a/views/DE/account/services.pug
+++ b/views/DE/account/services.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "User Profile"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
   body
     div(class="container")
diff --git a/views/DE/account/verification.pug b/views/DE/account/verification.pug
index 575e8e7455cf99714a174d4de9c8c6edec5e6199..a5518385d140d8c51d0b485087e46097b01d98ec 100644
--- a/views/DE/account/verification.pug
+++ b/views/DE/account/verification.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "User Verification"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     style.
       .container { 
         height: 400px;
diff --git a/views/DE/project/addProjectOverview.pug b/views/DE/project/addProjectOverview.pug
index f6517d29faccb116a9e7345b04084ca0a86e53d5..5752e8b9d13e54bf75971a3c0339aa908b4f966c 100644
--- a/views/DE/project/addProjectOverview.pug
+++ b/views/DE/project/addProjectOverview.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Add Project Overview"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     // jQuery UI - Datepicker
     link(rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css")
diff --git a/views/DE/project/landingpage.pug b/views/DE/project/landingpage.pug
index a835ec04d9823d0f847956b9bf6012eaf92b083f..d00050e9dc26993a9e4e5085e1ba423f8cd0ebe4 100644
--- a/views/DE/project/landingpage.pug
+++ b/views/DE/project/landingpage.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Project List"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/DE/project/mailinglists.pug b/views/DE/project/mailinglists.pug
index c38c8042e3dead88fbbf9febf47439d6258e1eab..5f24660fb586aad062716a25a04d2490e459762d 100644
--- a/views/DE/project/mailinglists.pug
+++ b/views/DE/project/mailinglists.pug
@@ -3,7 +3,7 @@ html(lang="de")
     title= "Mailinglisten"
     meta(charset="UTF-8")
     meta(name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     link(rel="stylesheet" href="/fonts/ionicons.min.css")
     link(rel="stylesheet" href="assets/css/Testimonials.css")
diff --git a/views/DE/project/project-simplified.pug b/views/DE/project/project-simplified.pug
index cb868f9ab04683fb3d9c4d4cd5c514c91083f284..a7f317b77723ab65a994c6e23bd4dee7b8bb0a1e 100644
--- a/views/DE/project/project-simplified.pug
+++ b/views/DE/project/project-simplified.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Project List"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
       .help .card-title > a:before {
diff --git a/views/DE/project/projectOverview.pug b/views/DE/project/projectOverview.pug
index e015d1e650c22ff70c32feda6ebff7d2edd7b3b2..beacda4ade66f74fedff45552362b49ec0f6c383 100644
--- a/views/DE/project/projectOverview.pug
+++ b/views/DE/project/projectOverview.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Project List"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/DE/project/projects.pug b/views/DE/project/projects.pug
index c2730b807aa30e4e7446275dc791777989f1c30b..f3693d924585c0e8cccd20a3cd9dd8efd6eb9f70 100644
--- a/views/DE/project/projects.pug
+++ b/views/DE/project/projects.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Project List"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/DE/project/videoconferences.pug b/views/DE/project/videoconferences.pug
index e6ee7b6907023ec96a97b4e4345c72d94587491e..20706244c7f9eaffe886c48e1b07d66b4efb82a1 100644
--- a/views/DE/project/videoconferences.pug
+++ b/views/DE/project/videoconferences.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Project List"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/account/forgotPwd.pug b/views/EN/account/forgotPwd.pug
index 1cde0888090e2046496e472178d2d296a6f8c647..985793b02c8551de670b8d7e05851d81ce6f648f 100644
--- a/views/EN/account/forgotPwd.pug
+++ b/views/EN/account/forgotPwd.pug
@@ -4,8 +4,8 @@ html(lang="en")
     title= "Forgot Password"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/custom/login.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/custom/login.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/account/home.pug b/views/EN/account/home.pug
index d2f3875a5a831fde499fae7baddb5acfbd47e34d..df71fe1840f6c5bd6be7cf0ba88e320669129905 100644
--- a/views/EN/account/home.pug
+++ b/views/EN/account/home.pug
@@ -4,7 +4,7 @@ html(lang="en")
     title= "User Account"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/account/profile.pug b/views/EN/account/profile.pug
index 47c1f7e8683e370e2fb368337c4fca5d419230fe..60788795491df06cca87c2faa1c76465c6f6f47c 100644
--- a/views/EN/account/profile.pug
+++ b/views/EN/account/profile.pug
@@ -4,7 +4,7 @@ html(lang="en")
     title= "User Profile"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/account/registration.pug b/views/EN/account/registration.pug
index 88ef5a932c510753f110253fec986dd426f6896f..2e1aba4c72ce4001e89aad36138ac9218b4e4c93 100644
--- a/views/EN/account/registration.pug
+++ b/views/EN/account/registration.pug
@@ -4,7 +4,7 @@ html(lang="en")
     title= "Create New Account"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/account/reset.pug b/views/EN/account/reset.pug
index b8939ea2200d627786fa64a8feae03da02d5b346..606b304f69f9a56a5ac414cb2869179c2a311f8e 100644
--- a/views/EN/account/reset.pug
+++ b/views/EN/account/reset.pug
@@ -4,8 +4,8 @@ html(lang="en")
     title= "Reset Password"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/custom/login.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/custom/login.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/account/security.pug b/views/EN/account/security.pug
index 2a5c248ce1f9e98b429b52eb9261f322cd38fcf9..c2c997b0ececb95abc04617a40ce0fd373b88ea1 100644
--- a/views/EN/account/security.pug
+++ b/views/EN/account/security.pug
@@ -4,7 +4,7 @@ html(lang="en")
     title= "User Profile"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/account/services.pug b/views/EN/account/services.pug
index f095144beb05de603a741230ae857d11b543b3f9..c70d729fa83da0e81bf5d82058008a5b14b9d3d5 100644
--- a/views/EN/account/services.pug
+++ b/views/EN/account/services.pug
@@ -4,7 +4,7 @@ html(lang="en")
     title= "User Profile"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/project/addProjectOverview.pug b/views/EN/project/addProjectOverview.pug
index 7b40b54fc63b3d774caf8d0b8af272f4e3a554ce..d0a4b0ebff6e43d8f1760471c8a6598d584204c3 100644
--- a/views/EN/project/addProjectOverview.pug
+++ b/views/EN/project/addProjectOverview.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Add Project Overview"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/project/mailinglists.pug b/views/EN/project/mailinglists.pug
index f2ddbd8b8e7eb89a85e4dc16310b96acf74e06e3..fdc0ef2398bf1b2e4495cca2bd66d34d419df497 100644
--- a/views/EN/project/mailinglists.pug
+++ b/views/EN/project/mailinglists.pug
@@ -3,7 +3,7 @@ html(lang="en")
     title= "Mailinglisten"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {
diff --git a/views/EN/project/projects.pug b/views/EN/project/projects.pug
index 56f65c10de4655b786ec93a865b6e57adc5f5e10..f1ecc57944a7619206f29ed7cadcff181f2c7050 100644
--- a/views/EN/project/projects.pug
+++ b/views/EN/project/projects.pug
@@ -4,7 +4,7 @@ html(lang="de")
     title= "Project List"
     meta(charset="UTF-8")
     meta(name="viewport", content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no")
-    link(rel="stylesheet", type="text/css", href="https://transfer.hft-stuttgart.de/css/bootstrap/bootstrap.css")
+    link(rel="stylesheet", type="text/css", href="/css/bootstrap.css")
     link(rel="stylesheet", href="https://use.fontawesome.com/releases/v5.8.2/css/all.css", integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay", crossorigin="anonymous")
     style.
         .collapse {