в чем может быть проблема?
background-size: cover;
object-fit:cover;
<div class="slick1 slick-slider">
<div class="slick2 slick-slider">
function check() {
var submit = document.getElementsByName('submit')[0];
if (document.getElementById('politics').checked && document.getElementById('politics').checked)
submit.disabled = '';
else
submit.disabled = 'disabled';
}