css: change dst reset button appearance

style/_sidebar.scss

@@ -236,11 +236,11 @@ aside {
             margin: 0 10px;
             button {
                 color: white;
-                background: #29AAB3;
+                background: crimson;
                 width: 22px;
                 height: 22px;
                 text-align: center;
-                border-radius: 11px;
+                /* border-radius: 11px; */
                 margin-top: 2px;
                 padding-left: 2px;
                 padding-top: 3px;