Hello,

Please try using the below Custom CSS code and paste it to Dashboard >> Theme Settings >> Custom CSS >> Custom CSS for mobile:

– For the Sidebar hiding for Mobile view:
.offcanvas-sidebar-mobile:not(.wd-on-toolbar) .wd-sidebar-opener { display: none !important; }

-For Buy Now button adjustment for Mobile view:

.single-product form.cart { flex-wrap: nowrap !important; gap: 5px !important; }

.single-product .btn, .button, button, [type="submit"], [type="button"] { padding: 12px 12px !important; }

Hope this helps!

Best Regards