.fixed-block__fixed_on {
    position: fixed;
    top: 0;
    margin-top: 25px;
    z-index: 10;
}

.fixed-block_wrap.fixed-block_wrap__sticky > div {
    position: sticky;
    top: 25px;
    z-index: 10
}

.fixed-block__stopper {
    width: 100%;
}