body {
    margin: 0px 0px 0px 0px;
}

a {
    color: #000000;    
    text-decoration: none;
}

.center {
    position: absolute;
    top: 50%;
    margin-top: -50px;
    width: 100%;
    text-align: center;
}

.content {
    margin-left: auto;
    margin-right: auto;
    height: 100px;
    width: 200px;
}