html, body {
    height: 100%;
    margin: 0;
}
main {
    display: table;
    width: 100%;
    height: 100%;
    text-align: center;
}
.logoBlock {
    display: table-cell;
    height: 100%;
    vertical-align: middle;
    text-align: center;
}
.logo {
    display: block;
    width: 128px;
    height: 208px;
    margin: auto;
    background: url("/svg/logo_2019.svg") no-repeat center center;
    background-size: cover;
    text-indent: -9999px;
}



.enter {
    display: block;
    margin: 32px auto 0;
    padding: 8px 16px;
    border: 1px solid #999999;
    width: 128px;
    text-decoration: none;
    color: #000000;
    transition: all 300ms 0s ease;
}
.enter:hover {
    background-color: #000000;
    border: 1px solid #000000;
    color: white;
}