Help with 4 row image blocks customization

Site URL: https://www.emthaw.com

I use Squarespace 7.1. I have a shop by category and best sellers section and I'd like them to be side by side on mobile (horizontally). On desktop version, they are side by side but on mobile, the size of the images are huge and stacked on top of each other (vertically). There are 4 rows for both section (category and best sellers). Can someone help me with a CSS code? I'd greatly appreciate it. 

Add to Design > Custom CSS

/* Mobile 2 columns */
@media screen and (max-width:767px) {
div#block-yui_3_17_2_1_1604951950007_46430+.row>.span-3 {
    width: 50% !important;
    float: left !important;
}
div#block-yui_3_17_2_1_1604951950007_46430+.row>.span-3:nth-child(2n+1) {
    clear: left !important;
}
div#block-yui_3_17_2_1_1604951950007_46430+.row>.span-3 * {font-size: 20px !important;}
}

3 hours ago, tuanphan said:

Add to Design > Custom CSS

/* Mobile 2 columns */
@media screen and (max-width:767px) {
div#block-yui_3_17_2_1_1604951950007_46430+.row>.span-3 {
    width: 50% !important;
    float: left !important;
}
div#block-yui_3_17_2_1_1604951950007_46430+.row>.span-3:nth-child(2n+1) {
    clear: left !important;
}
div#block-yui_3_17_2_1_1604951950007_46430+.row>.span-3 * {font-size: 20px !important;}
}

 

Thank you so much for your help! This worked for my "shop by category."