📅  最后修改于: 2022-03-11 14:53:11.151000             🧑  作者: Mango
h1 {
position: relative;
font-size: 30px;
z-index: 1;
overflow: hidden;
text-align: center;
}
h1:before, h1:after {
position: absolute;
top: 51%;
overflow: hidden;
width: 50%;
height: 1px;
content: '\a0';
background-color: red;
}
h1:before {
margin-left: -50%;
text-align: right;
}
.color {
background-color: #ccc;
}