body{
    font-family: 'Montserrat';
    font-size: 30px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.5rem;
}
div.main {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: #000 url('/img/backgroung.jpg') no-repeat center;
    background-position-x: center;
    background-position-y: center;
    background-size: auto;
    background-position: center center;
    background-size: cover;
    text-align: center;

}
div.main {
    text-align: center;
}
img.cs {
    margin: 11vh 1rem;
    max-width: 90%;
}
img.logo {
    width: 180px;
}