Remove white space on mobile website version

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

I am looking for some code to remove the white space above my image, on mobile site only. (It is perfect on desktop).

I've attached an image of this, and my URL is https://www.nicetystudio.com/

Add to Home > design > Custom CSS

@media screen and (max-width:640px) {
div#block-yui_3_17_2_1_1581963227650_19662 {
    padding-top: 0 !important;
}
}

Thanks again for your help! @tuanphan