Fix: Adjust icon button CSS (#16)

Author: tonyjin

src/components/Button/Button.scss

@@ -123,9 +123,4 @@
             text-decoration: underline;
         }
     }
-
-    // Vertically center icon
-    svg {
-        display: block;
-    }
 }

src/components/ContentUploader/ItemAction.scss

@@ -1,5 +1,10 @@
 .bcu-item-action {
     button {
         display: flex;
+
+        // Vertically center icon
+        svg {
+            display: block;
+        }
     }
 }