Accessibility: Watch & Star on small screens

The elements were hidden on small screens to preserve space and the
icons still conveyed the meaning for users with intact eye vision.
However, the names were no longer exposed to screen readers, and their
users usually cannot obtain the meaning from the icons.

Adding aria-labels to the affected templates results in certain
complexity due to the DOM, so instead I decided to use some accessible
CSS tricks to move the content off the screen instead of hiding it. It
should remain accessible for most screen readers.

1 files changed, 10 insertions, 4 deletions

diff --git a/web_src/css/repo/header.css b/web_src/css/repo/header.css
index d5c7d212e8..3400284e4b 100644
--- a/web_src/css/repo/header.css
+++ b/web_src/css/repo/header.css
@@ -89,11 +89,17 @@
   .repo-header .flex-item {
     flex-grow: 1;
   }
-  .repo-buttons .ui.labeled.button .text {
-    display: none;
-  }
+  .repo-buttons .ui.labeled.button .text,
   .repo-header .flex-item-trailing .label {
-    display: none;
+    /* the elements are hidden from users with intact eye vision,
+     * because SVG icons convey the meaning.
+     * However, they should remain accessible to screen readers */
+    position: absolute;
+    left: -1000vw;
+    top: auto;
+    width: 1px;
+    height: 1px;
+    overflow: hidden;
   }
   .repo-header .flex-item-trailing .repo-icon {
     display: initial;