#app{height:100%;width:100%;border:hidden;overflow:hidden}body{margin:0;font-family:黑体,Heiti SC,sans-serif}.content{display:flex;justify-content:center;width:100%;height:auto}.content_center{flex-direction:column;width:1300px}.content_center,.row{display:flex;height:auto}.row{flex-direction:row;justify-content:space-between;width:100%;margin-bottom:30px}