Update interface.js

interface.js

@@ -83,13 +83,21 @@
       z-index: 10;
       width: 36px;
       height: 36px;
+      min-width: 36px;
+      min-height: 36px;
       border-radius: 50%;
       border: none;
       background: #2E2E2EB3;
       color: #fff;
       font-size: 18px;
-      line-height: 36px;
-      text-align: center;
+      line-height: 1;
+      padding: 0;
+      box-sizing: border-box;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      -webkit-appearance: none;
+      appearance: none;
       cursor: pointer;
       user-select: none;
     }