body{background: url('/static/index/images/rules_bg.png') no-repeat;width: 100%;height: 100vh;background-size: 100%}
.header{width: 100%;height: 8vh;text-align: center;}
.header img{height: 3rem;margin: 1rem auto 0;}
.rules{width: 90%;margin: 3rem auto 0;background: url('/static/index/images/rules_block_bg.png') no-repeat;background-size: 100% 100%;padding: 5px 10px 15px;color: #FFF;}