What "Disable Content Title" do at code

Hi, I'd like to know, what exactly do checking box "Disable Elements - Content Title" on standalone page to code.
If I check,
<header class="entry-header">...</header>
is completly missing from page code.
I'm trying hide "Page titles" only on PC view, due to toggled menu I want to show it on mobiles and tablets.
As a workaround I use this:

@media (min-width:768px) {
.entry-title {
display: none;
}
}

But I want code as clean as possible, so I'd like use the same way as check box do, but only for @media...
Hope You understand my terrible english.
Thanx Radek