body { max-width: 1920px; margin: 0 auto; font-family: -apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,\\5FAE\8F6F\96C5\9ED1,helvetica neue,helvetica,ubuntu,roboto,noto,segoe ui,Arial,sans-serif; background: url("../images/body-bg.png") no-repeat top #f7f7f7; -moz-background-size: 100% auto; background-size: 100% auto; }

.container { max-width: 1200px; margin: 0 auto; height: 100%; }

.l { float: left; }

.r { float: right; }

@media screen and (max-width: 1200px) { .container { margin: 0 5%; } }

.btn { width: 110px; height: 40px; border: 1px solid #b5b5b5; -webkit-border-radius: 25px; -moz-border-radius: 25px; border-radius: 25px; display: table; }

.btn span { display: table-cell; vertical-align: middle; text-align: center; }