滚动条样式优化

resources/assets/dcat/sass/mixins/_scrollbar.scss

@@ -2,6 +2,7 @@
 @mixin scrollbar($selector) {
   #{$selector}::-webkit-scrollbar {
     width: 12px;
+    height: 12px;
   }
   #{$selector}::-webkit-scrollbar-track {
     background-color: #eee;

resources/assets/dcat/sass/theme/_dark.scss

@@ -5,6 +5,7 @@ $body-dark-modal-bg: lighten($body-dark-color, 3%);
 @mixin dark-scrollbar($selector) {
   #{$selector}::-webkit-scrollbar {
     width: 12px;
+    height: 12px;
   }
   #{$selector}::-webkit-scrollbar-track {
     background-color: $body-dark-bg;