CSS - 用于绘制圆角的倒置边框半径

Question

我想知道是否有办法只使用CSS以这种方式执行这些边框：

我正在尝试使用CSS伪元素:: after和::之前，但我感觉不到div之间的差距。有什么建议吗？

Answer 1

您可以使用伪元素创建圆形片段和“剪裁”边框。

.flex {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.flex > * {
  height: 50px;
  position: relative;
  display: flex;
  align-items: center;
}

.flex > *:before {
  content: "";
  position: absolute;
  display: inline-block;
  top: 10px;
  bottom: 0px;
  left: -90px;
  width: 90px;
  border-right: 2px solid red;
  border-bottom: 2px solid red;
  border-bottom-right-radius: 10px;
}

.flex > *:after {
  content: "";
  position: absolute;
  display: inline-block;
  top: -2px;
  height: 10px;
  left: 0px;
  width: 10px;
  border-left: 2px solid red;
  border-top: 2px solid red;
  border-top-left-radius: 10px;
}

.flex > .one {
  width: 100px;
}

.flex > .two {
  width: 200px;
}

.flex > .three {
  width: 300px;
}

.flex > .four {
  width: 400px;
}

.degrees {
  /* circle styles */
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid red;
  
  /* styles for centering */
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 15px;
}

<div class="flex">
   <div class="one">
     <div class="degrees">1°</div>
   </div>
   <div class="two">
     <div class="degrees">2°</div>
   </div>
   <div class="three">
     <div class="degrees">3°</div>
   </div>
   <div class="four">
     <div class="degrees">4°</div>
   </div>
</div>

Answer 2

这些是款式。因此，在标记样式=＆＃34; -moz-border-radius：5px;＆＃34;

input[type=email] {
    -moz-border-radius: 5px;
    border-radius: 5px;
    border: solid 1.4px black;
    padding: 5px;
    padding: 7px 7px 7px 7px;
    max-width: 300px;
    width: 80%;
}