如何在CSS中实现响应式功能区形状？

Question

试图用CSS实现这一点。我已经做到了这一点，但是如果我的标签（CAREER）的长度超过的大小，则此操作会中断div。如果更长，则内容将自动换行，并且高度会div增加。但是左侧的色带切割并不能快速响应。有人可以建议更好的方法吗？

.custom-tag-container {
  border: 1px solid;
  margin: auto;
  display: flex;
  align-items: stretch;
  border-color: green green green transparent;
  padding: 4px !important;
}

.custom-tag-container>p {
  color: green;
  font-weight: bold;
  flex: 1;
  margin: auto;
}

#triangle-left {
  height: 25px;
  width: 25px;
  background: transparent;
  transform: rotateZ(45deg) translateX(-12.5px) translateY(12.5px);
  border: 1px solid;
  border-color: green green transparent transparent;
}

<div class="custom-tag-container">
  <div id="triangle-left" />
  <p>Hello Worldsm</p>
</div>

JS小提琴

Answer 1

这是一个依赖于偏斜变换的想法，它可以响应并且您将具有透明性：

.box {
  height: 50px;
  border: 2px solid green;
  border-left: 0;
  border-radius:0 5px 5px 0;
  position:relative;
  margin:5px;
}
.box:before,
.box:after{
  content:"";
  position:absolute;
  left:0;
  height:50%;
  width:3px;
  background:green;
}
.box:before {
  top:0;
  transform:skew(45deg);
  transform-origin:top;
}
.box:after {
  bottom:0;
  transform:skew(-45deg);
  transform-origin:bottom;
}

<div class="box"></div>

<div class="box" style="height:80px"></div>

如果要保持箭头的宽度相同，则可以使用背景考虑不同的想法：

.box {
  height: 50px;
  border: 2px solid green;
  border-left: 0;
  border-radius:0 5px 5px 0;
  position:relative;
  margin:5px;
  overflow:hidden;
}
.box:before,
.box:after{
  content:"";
  position:absolute;
  left:0;
  top:0;
  height:50%;
  width:30px;
  background:
    linear-gradient(to top right,
      transparent calc(50% - 4px),green,transparent 50%) 
      bottom/100% calc(100% + 4px);
}
.box:after {
  transform:scaleY(-1);
  transform-origin:bottom;
}

<div class="box"></div>

<div class="box" style="height:80px"></div>

以及SVG

.box {
  height: 50px;
  border: 2px solid green;
  border-left: 0;
  border-radius:0 5px 5px 0;
  position:relative;
  margin:5px;
}
.box:before,
.box:after{
  content:"";
  position:absolute;
  left:0;
  top:0;
  height:50%;
  width:30px;
  background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 15 15" preserveAspectRatio="none"><line x1="0" y1="-1" x2="15" y2="16" stroke="green"  /></svg>') 0 0/100% 100%;
}
.box:after {
  transform:scaleY(-1);
  transform-origin:bottom;
}

<div class="box"></div>

<div class="box" style="height:80px"></div>

您还可以优化代码，并在不使用伪元素的情况下执行此操作：

.box {
  height: 50px;
  border: 2px solid green;
  border-left: 0;
  border-radius:0 5px 5px 0;
  margin:5px;
  background:
   url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 15 15" preserveAspectRatio="none"><line x1="0" y1="-1" x2="15" y2="16" stroke="green"  /></svg>') top left/30px 50%,
   url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 15 15" preserveAspectRatio="none"><line x1="0" y1="16" x2="15" y2="-1" stroke="green"  /></svg>') bottom left/30px 50%;
  background-repeat:no-repeat;
}

<div class="box"></div>

<div class="box" style="height:80px"></div>

箭头宽度也是动态的时，可以使用相同的SVG获得第一个结果。诀窍是仅定义高度并保留比例：

.box {
  height: 50px;
  border: 2px solid green;
  border-left: 0;
  border-radius:0 5px 5px 0;
  margin:5px;
  background:
   url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 15 15"><line x1="0" y1="-1" x2="15" y2="16" stroke="green"  /></svg>') top left/auto 50%,
   url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 15 15"><line x1="0" y1="16" x2="15" y2="-1" stroke="green"  /></svg>') bottom left/auto 50%;
  background-repeat:no-repeat;
}

<div class="box"></div>

<div class="box" style="height:80px"></div>

您也可以在内部轻松添加颜色。

使用偏斜变换：

.box {
  height: 50px;
  border: 2px solid green;
  border-left: 0;
  border-radius:0 5px 5px 0;
  position:relative;
  overflow:hidden;
  z-index:0;
  margin:5px;
}
.box:before,
.box:after{
  content:"";
  position:absolute;
  z-index:-1;
  left:0;
  right:0;
  height:50%;
  border-left:3px solid green;
  background:yellow;
}
.box:before {
  top:0;
  transform:skew(45deg);
  transform-origin:top;
}
.box:after {
  bottom:0;
  transform:skew(-45deg);
  transform-origin:bottom;
}

<div class="box"></div>

<div class="box" style="height:80px"></div>

具有SVG背景

.box {
  height: 50px;
  padding-left:30px;
  border: 2px solid green;
  border-left: 0;
  border-radius:0 5px 5px 0;
  margin:5px;
  background:
   url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 15 15" preserveAspectRatio="none"><polygon points="16,17 16,-2 0,-1 " fill="yellow" stroke="green" /></svg>') top left/30px 50%,
   url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 15 15" preserveAspectRatio="none"><polygon points="16,16 16,-2 0,16 " fill="yellow" stroke="green" /></svg>') bottom left/30px 50%,
   yellow content-box;
  background-repeat:no-repeat;
}

<div class="box"></div>

<div class="box" style="height:80px"></div>