html {
    height: 100%;
    background: black;
}
body {
    background: linear-gradient( rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8) ), url(/imgs/bg.jpg);
    display: flex;
    align-items: center;
    justify-content: center;
    align-content: center;
    min-height: 100%;
    width: 100%;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    overflow: hidden;
}

.main_block {
    text-align: center;
}

.main_block h1 {
    font-size: 7vh;
    color: #ffffff;
    text-transform: uppercase;

}

.contacts {
    color: #ffffff;
    text-align: center;
    font-size: 2vh;
}

.contacts a {
    color: #ffffff;
    text-decoration: none;
}

.contacts span {
    color: #ff9a00;
}