html, body {
    width: 100%;
    height: 100%;
    box-sizing: border-box;
}
html {
    display: table;
    background: url('../images/ASwirl.jpg') no-repeat bottom right fixed;
    background-size: cover;
}

body {
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    font-family: verdana, arial, tahoma;
    font-size: 12px;
}

ul, li {
    list-style: none;
    margin: 0;
    padding: 0;
}

ul {
    font-size: 0px;
    position: relative;
    z-index: 1;
    display: inline-block;
    border-radius: 4px;
    overflow: hidden;
    background: rgba(255, 255, 255, .2);
    border: 1px solid rgba(255,255,255,.7);
    box-shadow: 0 0 30px rgba(0, 0, 0, .5);
}
ul::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: 0; right: 0; bottom: 0; left: 0;
    background: inherit;
    box-shadow: inset 0 0 3000px rgba(255, 255, 255, .7);
    filter: blur(20px);
}
li a {
    display: block;
    height: 100%;
    color: black;
    text-decoration: none;
    font-size: 24px;
    padding: 10px 20px;
}

li a:hover {
    background-color: rgba(255, 255, 255, .7);
}

.spacer {
    display: inline-block;
    margin: auto;
    width: 90%;
    height:1px;
    background-color: rgba(0, 0, 0, .2);
    margin: 0;
    padding: 0;
    line-height: 0;
    box-shadow: 0 0 5px rgba(255, 165, 0, .9);    
}