How Do You Increase The Image Size On Multicolumn Mobile Dawn Theme?

Thanks for the info, check this one.

From you Admin page, go to Online Store > Themes

Select the theme you want to edit

Under the Asset folder, open the main.css(base.css, style.css or theme.css)

Then place the code below at the very bottom of the file.

@media only screen and (max-width: 989px){
.multicolumn-card__image-wrapper--third-width {
    width: 50%;
}
}
@media only screen and (max-width: 749px){
.multicolumn-card__image-wrapper--third-width {
    width: 70%;
}
}

And save.

Result:

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