html:
<button onclick=""bombClick()" >点击弹框</button>
<div id="bombContain"></div>
<div id="bomb_div"></div>
css:
#bombContain{
z-index: 199412204822//z-index只有在定位元素上生效，默认值static是没有定位的
background-color:#000
opacity:0.6
top:0
left:0
width:100%
height:100%
position:fixed
display:none
}
#bomb_div{
z-index:199412204822
width:34%
height:450px
top:66px
left:36%
margin:0
padding:0
background-color:#fff
box-shadow:1px 1px 50px rgba(0,0,0,.3)
position:fixed
display:none
}
js:
function bombClick(){
$("#bombContain").css("display","block")
$("#bomb_div").css("display","block")
}
CSS部分
div{width: 400px
height: 400px
border:1px solid red
float: left
}
body:hover .box{
display: block
}
.box{
width: 200px
height: 200px
background: red
display: none
}
html部分
<div ><div class="box">
</div>
</div>
