角点div没有用半径角点填充父div

<div class="parent">
  <div class="child"></div>
</div>

.parent {
  background-color: #f0f0f0;
  padding: 20px;
}

.child {
  position: relative;
  width: 100px;
  height: 100px;
  background-color: #fff;
}

.child::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 10px;
  background-color: #fff;
  z-index: -1;
}

<div class="parent">
  <div class="child"></div>
</div>

.parent {
  background-color: #f0f0f0;
  padding: 20px;
  overflow: hidden; /* 添加这一行 */
}

.child {
  width: 100px;
  height: 100px;
  background-color: #fff;
  border-radius: 10px;
}

<div class="parent">
  <div class="child"></div>
</div>

.parent {
  background-color: #f0f0f0;
  padding: 20px;
}

.child {
  width: 100px;
  height: 100px;
  background-color: #fff;
  clip-path: inset(0 round 10px); /* 使用clip-path裁剪 */
}