#kv {
    display: flow-root;
    width: 100vw;
    justify-content: center;
    align-items: center;
    margin-left: calc((100vw - 100%) / 2 * -1);
}

@media (min-width: 641px)
#kv {
    margin: 0 0 75px 0;
    text-align: center;
    line-height: 0;
}