.container {
    width: 750px;
    margin: 1em auto 0;
    text-align: center;
}
 
 
.hidden { display: none; }
 
 
.notice * {
    box-sizing: border-box;
}
 
.notice {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
}
 
.notice > .bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background-color: black;
    opacity: .85;
}
 
.notice > .content {
    position: relative;
    z-index: 1;
    max-width: 750px;
    margin: 0 auto;
    padding: 0 20px;
}
 
.notice > .content p,
.notice > .content a.close {
    font-size: 0.75em;
    line-height: 1.5em;
    color: white;
}
 
.notice > .content a.close {
    display: block;
    float: right;
    padding: 8px 10px;
    margin: 0 0 0 1em;
    border: 1px solid white;
    text-decoration: none;
}
 
.notice > .content a.close:hover {
    background-color: white;
    color: black;
}