html{line-height:1.8}header{background-color:fff;width:100%;height:90px;position:fixed;top:0}main{margin-top:90px;padding:0 10px}h1{margin-bottom:20px;font-size:2em;font-weight:700}a.items{color:#30c8ff;text-decoration:underline;transition:color .5s}a.items:hover{color:#7eddff}