How to display scrollbars on the right side of the background system and how to solve the problem of double scrollbars

1. stay <router-view /> The label is wrapped here

 <!--  On the right  -->
    <div class="content_container">
      <router-view></router-view>
    </div>

css

   //    On the right 
    .content_container {
    position: absolute;
    top: 70px;
    left: 250px;
    right: 0;
    bottom: 0;
    overflow-y: auto;
    }

About css The explanation written like this

2. A double scroll bar appears

Solution

stay app.vue file

  Code

#app {
  height: 100%;
  overflow: hidden;
}

Perfect solution