Update public/index.html

public/index.html

@@ -15,7 +15,7 @@
       justify-content: center;
       align-items: center;
       height: 100vh;
-      background-image: url('https://www.w3schools.com/w3images/forest.jpg');
+      background-image: url('https://www.hft-stuttgart.de/fileadmin/Dateien/Hochschule/-_R_Juergen_Pollak_HFT_18.04.18-0091.jpg');
       background-size: cover;
       background-position: center;
     }