style: Prevents vertical spacing in course index. course-id stacks above content

Author: pham

_sass/_base.scss

@@ -164,6 +164,7 @@ sub {
   @include align-middle();
   font-family: var(--font-special);
   flex-direction: column;
+  z-index: 100;
   a {
     color: var(--color-theme);
     display: flex;

_sass/_tab-main.scss

@@ -70,9 +70,11 @@
   padding: 10px;
   overflow: hidden;
   text-align: left;
-  display: flex;
-  flex-direction: column;
-  justify-content: space-between;
+  &:not(.limit-height) {
+    display: flex;
+    flex-direction: column;
+    justify-content: space-between;
+  }
   &.limit-height {
     max-height: var(--grid-body-height);
     overflow-y: auto;