Style linting fixes.

assets/sass/components/flex-group/_flex-group.scss

@@ -1,6 +1,7 @@
 .flex-group,
 %flex-group {
   $gap: 1;
+
   @include gap($gap);
   display: flex;
   flex-wrap: wrap;

assets/sass/components/grid-group/_grid-group.scss

@@ -1,7 +1,9 @@
 .grid-group,
 %grid-group {
-  --column-min: 250px;
   $gap: 1;
+
+  --column-min: 250px;
+
   @include gap($gap);
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(var(--column-min), 1fr));

assets/sass/components/visually-hidden/_visually-hidden.scss

@@ -4,7 +4,7 @@
 
 .visually-hidden,
 %visually-hidden {
-  &:not(:focus):not(:active) {
+  &:not(:focus, :active) {
     position: absolute;
     clip: rect(0 0 0 0);
     clip-path: inset(50%);