CSS - 创建圆角矩形

Question

有没有办法创建一个圆形按钮,如图所示使用CSS(不使用Canvas或SVG)？

编辑:我不是在谈论border-radius,请看图片

Answer 1

这可以使用:after和:before:伪元素.

div {
  position: relative;
  margin: 30px;
  width: 150px;
  height: 100px;
  background: #FF5656;
  border-radius: 1000px / 200px;
}
div:after, div:before {
  position: absolute;
  content: '';
  width: 10px;
  height: 72%;
  border-top-left-radius: 200px 1000px;
  border-bottom-left-radius: 200px 1000px;
  left: -6px;
  top: 14%;
  background: #FF5656;
}
div:after {
  border-radius: 0;
  border-top-right-radius: 200px 1000px;
  border-bottom-right-radius: 200px 1000px;
  left: calc(100% - 4px);
}

<div></div>

将这些边框应用于input元素:

因为,您不能将:伪元素应用于input元素,您必须将:afterand :before:pseudo元素应用于其容器.

input {
  width: 150px;
  height: 100px;
  background: #FF5656;
  border-radius: 1000px / 200px;
  border: 0;
  cursor: pointer;
  color: black;
  font-size: 16px;
}
input::-moz-focus-inner {
  border: 0;
}
input:focus {
  outline: none;
}
.btn-container {
  position: relative;
  width: 150px;
  height: 100px;
  margin: 30px;
}
.btn-container:after,
.btn-container:before {
  position: absolute;
  content: '';
  width: 10px;
  height: 72%;
  border-top-left-radius: 200px 1000px;
  border-bottom-left-radius: 200px 1000px;
  left: -6px;
  top: 14%;
  background: #FF5656;
}
.btn-container:after {
  border-radius: 0;
  border-top-right-radius: 200px 1000px;
  border-bottom-right-radius: 200px 1000px;
  left: calc(100% - 4px);
}

<div class="btn-container">
  <input type="button" value="Button" />
</div>

正如@ misterManSam在评论中提到的那样,你也可以使用一个button元素来避免使用容器.

button {
  position: relative;
  width: 150px;
  height: 100px;
  background: #FF5656;
  border-radius: 1000px / 200px;
  border: 0;
  cursor: pointer;
  color: black;
  font-size: 16px;
}
button::-moz-focus-inner {
  border: 0;
}
button:focus {
  outline: none;
}
button:after,
button:before {
  position: absolute;
  content: '';
  width: 10px;
  height: 72%;
  border-top-left-radius: 200px 1000px;
  border-bottom-left-radius: 200px 1000px;
  left: -6px;
  top: 14%;
  background: #FF5656;
}
button:after {
  border-radius: 0;
  border-top-right-radius: 200px 1000px;
  border-bottom-right-radius: 200px 1000px;
  left: calc(100% - 4px);
}

<button>Button</button>