style: change bg color

jydocs-mobile/src/views/user/Library.vue

@@ -273,6 +273,7 @@ export default class UserLibrary extends Vue {
   .doc-tip--bottom {
     position: fixed;
     bottom: 0;
+    background: #FFF4E8;
     color: #FF9F40;
     font-size: 13px;
     font-weight: 500;