CSS边角半径

问题描述 投票:1回答:1

我怎么能复制这个?

Border radius我需要用CSS做这个,但我只能用2个单独的行做外部部分:

.top-left {
  position: absolute;
  background: black;
  height: 3px;
  width: 4rem;
  top: 0;
  left: 0;
  border-top-left-radius: 150px;
}

.left-top {
  position: absolute;
  background: black;
  height: 4rem;
  width: 3px;
  top: 0;
  left: 0;
  border-bottom-left-radius: 150px;
}
<div class="top-left"></div>
<div class="left-top"></div>
css border
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