Hi Mark,
It due to your custom CSS code:
#t4-section-1 {
margin: ;
padding: 10px 100px;
margin-top: -300px;
background: transparent;
}
you set the padding for this section so it looks quite small on mobile view.
If you want to set padding for desktop view only, you should use Media Queries:
@media (min-width: 992px) {
#t4-section-1 {
margin: ;
padding: 10px 100px;
margin-top: -300px;
background: transparent;
}
}
It will not affect the mobile view then.