*{margin:0;padding:0}.el-menu-demo{padding:0 20px;height:100%;display:flex;justify-content:space-between;align-items:center}.title{color:#333;align-items:center;height:40px;width:75px}@media screen and (min-width:400px){.el-menu-demo{display:flex;justify-content:space-between;align-items:center;background:#fff;height:60px}.title{font-size:20px;color:#333;align-items:center;height:40px;width:75px}.img_item{width:100%;height:300px}}