这是您的原始代码已修改
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;}<h1>This is my Title</h1><h1>Another Similar Title</h1><div ><h1>Just Title</h1></div>
