#hello-hello{height:50px;line-height:50px;color:green;background-color:#f2f5f6;border-radius:5px;border:1px solid green;margin:0 0 20px 0}.hello-sys{width:245px;height:100px;border:1px solid green}.hello-sys:hover{border:1px solid red;-webkit-box-shadow:0 10px 10px 0 rgba(255,0,0,.5);box-shadow:0 10px 10px 0 rgba(255,0,0,.5)}.text{font-size:14px}.item{margin-bottom:18px;text-align:left}.clearfix:after,.clearfix:before{display:table;content:""}.clearfix:after{clear:both}.box-card{width:480px}.box-card-right{width:540px}#hello-content p{text-align:left;text-indent:2em}#hello-content p:first-child{text-align:center;font-size:17px}