html - 调整窗口大小时保持圆的纵横比

Question

我使用 flexbox 排列了圆圈，它们在小屏幕宽度上看起来不错:

但是一旦我加宽屏幕的宽度，它们看起来就真的被拉长了。但我需要他们从各个 Angular 来看都是圆的。

我不确定是否有一种方法可以修复它们在不同屏幕尺寸上的显示。也许我可以使用一些媒体查询。如何处理？

JSFiddle

HTML

 <div class="dashboard-grey-menu">
   <div class="flex row no-padding">
     <div class="col"><div class="circle"></div></div>
     <div class="col"><div class="circle"></div></div>
     <div class="col"><div class="circle"></div></div>
     <div class="col"><div class="circle"></div></div>
   </div>
 </div>

CSS

.dashboard-grey-menu {
    height: 30vh;
    background-color: #959595;
  }

  .circle {
    border-radius: 50%;
    width: 15vw;
    height: 25vh;
    background-color: #B7B7B7;
    margin: auto;
  }

.flex {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 30vh;
  width: 100%;
}

Answer 1

您必须将圆的宽度和高度设置为相同的值:

.dashboard-grey-menu {
  height: 30vh;
  background-color: #959595;
}
.circle {
  border-radius: 50%;
  width: 10vw;
  height: 10vw;
  background-color: #B7B7B7;
  margin: 20px;
}
.flex {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 30vh;
  width: 100%;
}

<ion-content has-header="false">
  <div class="dashboard-grey-menu">
    <div class="flex row no-padding">
      <div class="col"><div class="circle"></div></div>
      <div class="col"><div class="circle"></div></div>
      <div class="col"><div class="circle"></div></div>
      <div class="col"><div class="circle"></div></div>
    </div>
  </div>
</ion-content>