样式小优化

src/components/HelpComp.vue

@@ -83,7 +83,7 @@ export default {
   flex-direction: column;
   padding-left: 235px;
   padding-right: 235px;
-  background: rgba(0, 0, 0, 0.7);
+  background: rgba(0, 0, 0, 0.82);
   > button.close {
     position: absolute;
     top: 55px;