Vertical widths of containers removed (#24184)

A vertical overflow appears in Firefox 112/MacOS 12.6 when the system
setting for scrollbars is to "Always" show them.
--- 
Here, the fixed 100vw container widths are removed, which removes the
overflow. It is, however, only simulated in Developer Tools in latest
Firefox and Chromium, so please test on a Gitea installation.

web_src/css/base.css

@@ -1814,9 +1814,8 @@ footer {
 }
 
 footer .container {
-  width: 100vw !important;
   padding: 0 0.5rem;
-  max-width: calc(100vw - 1rem) !important;
+  max-width: 100%;
 }
 
 footer .container .links > * {
@@ -2368,7 +2367,7 @@ a.ui.label:hover {
 }
 
 .ui.primary.label,
-.ui.primary.labels .label, 
+.ui.primary.labels .label,
 .ui.ui.ui.primary.label {
   background-color: var(--color-primary);
   border-color: var(--color-primary-dark-2);

web_src/css/dashboard.css

@@ -84,7 +84,6 @@
 }
 
 .dashboard .dashboard-navbar {
-  width: 100vw;
   padding-left: 0.5rem;
   padding-right: 0.5rem;
 }