fix invisible tab-switcher in emoji picker

src/components/sticker_picker/sticker_picker.vue

@@ -37,13 +37,8 @@
 .sticker-picker {
   width: 100%;
   position: relative;
-  .tab-switcher {
+  .contents {
-    position: absolute;
+    min-height: 250px;
-    top: 0;
-    bottom: 0;
-    left: 0;
-    right: 0;
-  }
     .sticker-picker-content {
       .sticker {
         display: inline-block;
@@ -58,5 +53,6 @@
       }
     }
   }
+}
 
 </style>