#a { width:200px; height:200px; padding:50px; border:1px #000000 solid; background-color:bisque; margin:auto; text-align:center; } #a span { font-size:30px; } #a button { width:100px; margin:20px auto; color:#ffffff; background-color:#000000; }
更新时间:2020-07-28 11:16:20