带有徽标的CSS响应式菜单

Question

我正在尝试制作响应式菜单。徽标位于左侧，菜单位于右侧。当页面宽度变小时，有没有办法检测菜单何时触摸了徽标，这样我就可以显示菜单图标（当前隐藏）并在徽标下面竖起菜单？

.header {
  overflow: hidden;
  background-color: #333;
  position: relative;
  width: inherit;
  margin-top: 20px;
}

.logo {
  display: inline-block;
  color: #fff;
  font-size: 17px;
  padding: 14px 16px;
}

.topnav {
  overflow: hidden;
  background-color: #333;
  float: right;
}

.topnav svg {
  color: #fff;
  width: 20px;
}

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}



.topnav .icon {
  display: none;
}

<div class="header">

  <div class="logo">Lorem ipsum dolor sit amet</div>

  <div class="topnav" id="myTopnav">
    <a href="#home" class="active">Home</a>
    <a href="#news">News</a>
    <a href="#contact">Contact</a>
    <a href="#about">About</a>
    <a href="javascript:void(0);" class="icon" onclick="myFunction()">
				    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path fill="currentColor" d="M16 132h416c8.837 0 16-7.163 16-16V76c0-8.837-7.163-16-16-16H16C7.163 60 0 67.163 0 76v40c0 8.837 7.163 16 16 16zm0 160h416c8.837 0 16-7.163 16-16v-40c0-8.837-7.163-16-16-16H16c-8.837 0-16 7.163-16 16v40c0 8.837 7.163 16 16 16zm0 160h416c8.837 0 16-7.163 16-16v-40c0-8.837-7.163-16-16-16H16c-8.837 0-16 7.163-16 16v40c0 8.837 7.163 16 16 16z"></path></svg>
				  </a>
  </div>

</div>