总结：持续跟踪与内容迭代

if($("#qrcode").css("display")=='block')

.news div{font-size:22px; height:auto; font-weight:bold; font-family:Microsoft YaHei; margin-bottom:2%; margin-left:3%; margin-right:3%; width:94%; padding-top:5%; color:#333; line-height:30px;}