.activity{margin:0 auto}.head-img{text-align:center;height:200px;overflow:hidden;background-color:#008b8b;position:relative}.head-img,.head-img .el-image{width:100%}.head-img .title{color:#fff;margin-top:50px}.head-img .describe{color:#7fffd4;margin-top:10px}.head-img .info-box{color:hsla(0,0%,100%,.6);height:60px;position:absolute;text-align:left;bottom:10px;left:10px}