css fixes, dropdown fixes

scss/ui/_cards.scss

@@ -53,7 +53,7 @@
   position: relative;
   background-color: rgba($primary, .03);
 
-  &::before {
+  &:before {
     position: absolute;
     top: -1px;
     right: -1px;
@@ -90,7 +90,7 @@
 .card-stacked {
   position: relative;
 
-  &::after {
+  &:after {
     position: absolute;
     top: -5px;
     right: 5px;
@@ -108,7 +108,7 @@
   padding: $card-spacer-y $card-spacer-x;
   background: #666666 no-repeat center/cover;
 
-  &::before {
+  &:before {
     position: absolute;
     top: 0;
     right: 0;
@@ -119,13 +119,13 @@
   }
 
   &:first-child,
-  &:first-child::before {
+  &:first-child:before {
     border-radius: $border-radius $border-radius 0 0;
   }
 }
 
 .card-cover-blurred {
-  &::before {
+  &:before {
     backdrop-filter: blur(2px);
   }
 }