.chongzhi { background-color:red; width:50px; color:#fff; height:30px; border-radius:10px; border:none; margin-bottom:5px; } .demo { width:50px; margin:0 auto; text-align:center; height:100px; } .time { width:100%; border-radius:50%; height:50px; text-align:center; border:1px red solid; color:red; } .div { width:100px; height:100px; background-color:red; margin:0 auto; text-align:center; line-height:100px; color:#fff; border-radius:50%; }
填入时间(单位/秒)即可实现手速和反应的测试