.titlebox{color:#5f4804;}.titlebox span{padding:10px 15px;border:2px solid #14c8ab;border-radius:.2em}.yellow{background-color:#fee71b;margin:40px 0;padding:30px 0}.kecheng{color:white}
.kecheng div{width:25%;margin:auto 16px;padding:20px;border-radius:.4em}.k1{background-color:#f69103}.k2{background-color:#21aade}.k3{background-color:#2ee4bb}.big-img{margin:40px auto}