Hiding an element on mobile is hiding more than the block I've coded in CSS

So I'm making a website that has a registration price table on desktop. This element hides on mobile in favor of a more mobile-friendly list.

https://www.medicalspashow.com/register

This is mostly working except in mobile view it's also hiding the testimonial and etc information below the pricing section. This is displaying correctly in the editor, but is not correct when I visit the site on Firefox, Chrome, or mobile. I'm using this CSS

@media only screen and (max-width: 768px) { #block-yui31721156158549852313231 { display: none; } }

@media only screen and (min-width: 769px) { #block-yui31721156158549852333748 { display: none; } }

What am I doing wrong?

@ericskribbles First, remove

@media only screen and (max-width: 768px) { #block-yui_3_17_2_1_1561585498523_13231 { display: none; } }

Then, use

@media only screen and (max-width:768px) {
div#block-yui_3_17_2_1_1561585498523_13231>.sqs-block-content:first-child {
   display: none;
}
}

Great, thanks!