.age18 img{
    filter: blur(6px);
    position: relative;
}
.age18 a{
    display: block;
    position: relative;
}
.age18 a::before{
    content: '';
    width: 100%;
    height: 60%;
    position: absolute;
    left: 0;
    z-index: 9;
    background: url(../images/18plus-muted.png) center center no-repeat;
    background-size: contain;
    top: 25%;
    margin: 0 auto;
}
.age18{
    position: relative;
}
.age18hover{
    position: absolute;
    content: "";
    z-index: 10;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    cursor: pointer;
}