diff --git a/views/DE/404.pug b/views/DE/404.pug
index 575cfc9959b789185acc1223aeb8a3246234d1fb..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.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 5f19f51a88da38466a26d9697f843c128cb9480d..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.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 508ca7af11023c290f2d98a6228ce4328c41936d..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.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 292572a4c37e58d8127a0bef869d2ed9e00dc6dd..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.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 1b3729c72bc089ff3e1d0fbe22626177a0eafda0..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.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 fb114770fdf6f51a2e9664e9b34dd03fca11ba6e..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.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 2e0a1eee91f63ba4c402f16da50b1d3370aabc2f..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.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 ef8693e5a1930b339eb47ed2b1d574b6cf1938e5..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.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 523ee1993d0632163aeec0228c3d44c5a7790ac7..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.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 1a525556d9eeac09c4b559304229344778db7301..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.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 3425083429f0aef425cbf376636b7593c904c2c1..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.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 6894c88fe723ef8a0daa387c88b019f3b2789447..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.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 5ff093f28786fe5fe7b1221777105666f019353e..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.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 16df2b4072f7b85c9cc91bf9e2c75c822f2fc478..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.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 fdda3403f58d973456a4c14b70e6b8b5a9d68195..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.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 b7d9c9ee36d64da1068e8a94469ef4c0445adf17..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.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 09d3a93b9dc63a27124c933e209ae4c00f246bd7..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.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 91ba82c232a91228845a1362c11eb3b1ee037f0a..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.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 6b14d9850bcf05a0275bcf58bb420d1ee36dadc5..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.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 82390276f09ced23ca2406a9e810411e334dc41e..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.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 838bca9863a9c28827d7a5dd3710b3126c82d90f..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.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 1e549e67e98b707ac757e399bfb76ca723d34e17..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.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 0b964959ad4c9ba777194af7e184f6cb5b2b47b9..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.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 e8d8be5b09913d083054f6ad6451b6339491b96f..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.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 7ad5e503741a8e0a9a8a4992d8647c1e4198bd3f..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.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 42375dad2ec261fdacb4d8763cfaf4b24003018e..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.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 43a4a4367a7bdf9483a1f631af9845a4fde48d0b..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.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 720bc8fc4d942ace9fe60be7a2b286b3e32aa6fb..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.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 {