header {
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    background-color: #fff;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-direction: row;
    -ms-flex-direction: row;
    flex-direction: row;
    height: 7rem;
    padding: 0 15px;
    position: fixed;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
    top: 0;
    width: 100%
}

.site-logo {
    transition: color 200ms cubic-bezier(.55, 0, .1, 1);
    color: #30acff;
    font-size: 3rem;
}

.ok-header__logo:hover {color: #546edb}