body,html,div,span,text,img,video,input{margin:0;padding:0}input{outline:0}video,img{max-width:100%;vertical-align:top}a:visited{color:blue}.body_bg{width:100%;height:100%;position:fixed;overflow:hidden;max-width:640px}.body_bg img{width:100%;height:auto}html,body{width:100%;height:100%}.body{width:100%;max-width:640px;margin:0 auto;position:relative;height:100%}.container{position:relative;z-index:1}.text-center{text-align:center}.card{margin:15px 0;background:#fff;padding:15px}.title{font-size:1.2em;margin:15px 0;font-weight:600}.section{margin:15px 0;line-height:25px;font-size:12px}.child{padding-left:20px}.video-title{margin:15px;padding:10px;border-radius:2px;box-shadow:0 1px 2px 0 rgba(0,0,0,0.2);position:relative;display:flex;flex-flow:row;line-height:40px;background:#fff}.video-icon{height:30px;width:30px;margin-top:5px}.video-text{flex-grow:1;padding-left:5px}.cover{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);z-index:10}