body, html {
    height: 100%;
}

body {
    background: url(../img/bg.jpg) no-repeat center center fixed;
    background-size: cover;
}

.centered {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    font-size: 25pt;
    font-family: 'Open Sans';
    font-weight: bold;
    cursor: default;
    user-select: none;
    color: #444;
}