Go to online store ----> themes ----> actions ----> edit code ---->assets ----> section-multicolumn.css
add this code at the end of the file.
.multicolumn .title-wrapper-with-link {
margin-top: 0;
display: none !important;
}
.multicolumn-list.slider {
padding: 0;
display: none !important;
}
.multicolumn .button {
margin-top: 4rem;
display: none !important;
}
result
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Thanks