html,body {
height:100%;
overflow:hidden;
}
body,div,h2 {
margin:0;
padding:0;
}
body {
font:12px/1.5 Tahoma;
}
center {
padding-top:10px;
}
button {
cursor:pointer;
}
#win {
position:absolute;
top:50%;
left:50%;
width:400px;
height:200px;
background:#fff;
border:4px solid #f90;
margin:-102px 0 0 -202px;
display:none;
}
h2 {
font-size:12px;
height:18px;
text-align:right;
background:#FC0;
border-bottom:3px solid #f90;
padding:5px;
cursor:move;
}
h2 span {
color:#f90;
cursor:pointer;
background:#fff;
border:1px solid #f90;
padding:0 2px;
}
点击按钮弹出一个弹出层效果(屏幕正中间)且可拖拽效果,可自行设置弹出层的宽度和高度