自己修改对应的class名称，CSS 代码：

.navbar-brand{position:relative;overflow:hidden;margin: 0px 0 0 0px;}.navbar-brand:before{content:""; position: absolute; left: -665px; top: -460px; width: 200px; height: 15px; background-color: rgba(255,255,255,.5); -webkit-transform: rotate(-45deg); -moz-transform: rotate(-45deg); -ms-transform: rotate(-45deg); -o-transform: rotate(-45deg); transform: rotate(-45deg); -webkit-animation: searchLights 6s ease-in 0s infinite; -o-animation: searchLights 6s ease-in 0s infinite; animation: searchLights 6s ease-in 0s infinite;}@-moz-keyframes searchLights{50%{left: -100px; top: 0;} 65%{left: 120px; top: 100px;}}@keyframes searchLights{40%{left: -100px; top: 0;} 60%{left: 120px; top: 100px;} 80%{left: -100px; top: 0px;}}

我在这里搬运的：https://luolt.cn/archives/2835.html