body {
    background-image:url('../img/background.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

a, a:hover, a:focus {
    color: #2a3e92;
}
.outer{
    display:table;
    position: absolute;
    width: 100%;
    height: 100%;
}
.middle{
    display: table-cell;
    vertical-align: middle;
}
ul {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
    padding: 10px;
}
.pdf-list{
    padding: 20px;
    text-align: center;
}
.inner{
width: 600px;
margin:auto;
    background-color: white;
}