.center {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

.logo {
    background-color: #fff;
    color: #636b6f;
    font-family: 'Nunito', sans-serif;
    font-weight: 200;
    font-size: 84px;
}