xxx::before {
content: '';
display: block;
position: absolute;
left: 0;//width:100%;
right: 0;//height: 100%;
top: 0;
bottom: 0;
background: rgba(255,255,255,0.4);
}
xxx::before {
content: '';
display: block;
position: absolute;
left: 0;//width:100%;
right: 0;//height: 100%;
top: 0;
bottom: 0;
background: rgba(255,255,255,0.4);
}
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