disables btn box shadow

src/client/styles/scss/_override-bootstrap.scss

@@ -77,7 +77,7 @@
     background: $this-color;
     border: 1px solid $this-color;
     opacity: 0.8;
-    box-shadow: none;
+    box-shadow: none !important;
   }
   &:active &.active {
     box-shadow: none;