styles: Implement sr-only CSS class

Author: Turbo87

app/styles/shared/a11y.module.css

@@ -0,0 +1,10 @@
+.sr-only {
+    position: absolute;
+    width: 1px;
+    height: 1px;
+    padding: 0;
+    overflow: hidden;
+    clip: rect(0, 0, 0, 0);
+    white-space: nowrap;
+    border: 0;
+}