fix: merge tabs and collapse

Author: wewoor

src/extensions/explore/style.scss

@@ -1,9 +1,11 @@
-@import 'mo/style/const.scss';
+@import 'mo/style/common';
 .#{$sidebar}-explorer {
     &-item {
         width: 100%;
+
         span:nth-child(2) {
             float: right;
+
             a {
                 margin-left: 5px;
             }