* { margin:0; padding:0; } button { width:50px; height:50px; line-height:30px; background:skyblue; font-size:32px; border:none; outline:none; } input { height:30px; text-align:center; border:none; font-size:32px; } div { width:100%; font-size:32px; text-align:center; /* margin-left:40%; */ margin-top:200px; }
更新时间:2023-02-21 20:25:09
js控制数字动态加减