.top{width:330px;box-sizing:border-box;margin:0 auto;padding:0 20px;height:50px;color:#4378be;display:flex;align-items:center;justify-content:space-between}.top-l{font-weight:700;color:#000}.top-r{white-space:nowrap;display:flex;align-items:center}.mid-wrap,iframe{width:100%;height:calc(100vh - 50px)}.bot-logo{position:fixed;bottom:30px;left:50%;height:12px;transform:translateX(-50%)}