Fix fonts used

assets/css/main.css

@@ -6,7 +6,7 @@
 
 @font-face {
     font-family: overpass;
-    src: url(/fonts/OpenSans-Regular.ttf)
+    src: url(/fonts/Overpass-Regular.ttf)
 }
 
 /* Element styling */
@@ -48,9 +48,15 @@ ul {
     flex-direction: row;
 }
 
+.horizontal-center {
+    display: flex;
+    justify-content: center;
+}
+
 .vertical {
     display: flex;
     flex-direction: column;
+    width: 100% !important;
 }
 
 .subbar-link {
@@ -60,6 +66,8 @@ ul {
 .title-sub {
     margin-top: 0px;
     margin-bottom: 10px;
+
+    color: white;
 }
 
 .title-sub-subbar {