.lettoRule{min-height:100vh;height:100%;padding-top:40px;-webkit-box-sizing:border-box;box-sizing:border-box;background-color:#05053b}.lettoRule .hearder{width:100vw;height:40px;position:fixed;left:0;top:0;background-color:#05053b}.lettoRule .hearder .back{position:absolute;top:50%;-webkit-transform:translateY(-50%);transform:translateY(-50%);width:6%;left:10px}.lettoRule .hearder .back img{width:100%}.lettoRule .ruleImg{width:100%;height:100%}