最佳答案
试试这个:
header {
border:1Px solid;
height: 200px;
position: relative;
}
header:before, header:after {
position: absolute;
width: 0;
height: 0;
content: '';
border-width: 100px;
border-style: solid;
}
header:before {
left: 0;
border-color: transparent transparent transparent #000;
}
header:after {
right: 0;
border-color:transparent #000 transparent transparent ;
}
<header></header>
关于javascript - 带有倾斜边框的现有 div 内的新 div,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47289500/