body { color: #000; background: url(http://images2015.cnblogs.com/blog/969197/201703/969197-20170325160900815-1058599404.jpg ) fixed; background-size: 100%; background-repeat: no-repeat; font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif; font-size: 12px; min-height: 101%; }