.content-anchor {
    position: relative;
    /* fixed page-header height */
    top: -60px;
    /* required for overflow-hidden to work */
    display: block;
    /* we don't want any impact on the layout */
    height: 0;
    font-size: 0;
    line-height: 0;
    /* required to force content to be hidden */
    overflow: hidden;
    visibility: hidden;
}

@media ( min-width: 992px ) {
    .content-anchor {
        top: -140px;
    }
}