我想知道如果这个形状可以在css3中尽可能少的html来完成：
到目前为止,我已经设法做到这一点：
.wrapper {
position: relative;
}
.Box {
width: 100px;
height: 100px;
border: 1px solid #000;
position: absolute;
top: 100px;
left: 100px;
}
.Box:before {
content: "";
border: 1px solid #000;
border-bottom: 1px solid #fff;
width: 50%;
height: 10px;
position: absolute;
top: -12px;
left: -1px;
}
.Box:after {
content: "";
border: 1px solid #000;
border-top: 1px solid #fff;
width: 50%;
height: 10px;
position: absolute;
bottom: -12px;
right: -1px;
}
<div class="wrapper"> <div class="Box"></div> </div>
解决方法
形状不需要额外的元素
可以使用< div> ;:::创建形状
>左边是左边的div,top和bottom的边框.
>右边是由…制成的：之前和它的顶部,右边和底部的边界
>加入两个框的跨度是用以下方式创建的：感谢skewY
Note the browser support of the transform property. IE 9需要-ms-前缀,Safari和Android浏览器需要-webkit-.
工作实例 – 只是形状
CSS已被压缩,伪元素的边框样式从div本身继承.
div {
border: solid 4px #000;
border-right-width: 0;
width: 100px;
height: 200px;
position: relative;
}
div:before,div:after {
content: '';
display: block;
height: 100%;
width: 100%;
border: inherit;
border-right-width: 4px;
border-left: none;
position: absolute;
left: 100%;
top: 13px;
margin-left: 20px;
}
div:after {
width: 20px;
border-right: none;
top: 5px;
transform: skewY(40deg);
margin: 0;
}
<div></div>
工作示例 – 带文本
通过上面的例子,内容将不会被包含在整个形状内.相反,它将被限制在div的半宽度内.内容需要包裹在< span>宽度为200％,可以将其打印到divs约束之外.
div {
border: solid 4px #000;
border-right-width: 0;
width: 100px;
height: 200px;
position: relative;
}
div:before,div:after {
content: '';
display: block;
height: 100%;
width: 100%;
border: inherit;
border-right-width: 4px;
border-left: none;
position: absolute;
left: 100%;
top: 13px;
margin-left: 20px;
}
div:after {
width: 20px;
border-right: none;
top: 5px;
transform: skewY(40deg);
margin: 0;
}
span {
width: 200%;
display: block;
padding: 20px 10px 10px;
}
<div><span>This is me writing a large amount of words into the div. I think that you may want a span in order to contain them.</span></div>
