Hiding blocks in mobile view

Site URL: https://www.ideograf.me/work/colab

Im hoping someone can help me with an answer to this

i have to small black buttons under the main paragraph of this page, i would like to hide them completely when in mobile view.

how can i achieve this?

Add to Home > Design > Custom CSS

/* Hide buttons */
@media screen and (max-width:767px) {
div#block-yui_3_17_2_1_1607154523964_13322 + .row {
    display: none;
}
}