Isotope 2 Columns on Mobiles https://wpsites.net/?p=114135

style.css

@media screen and (max-width: 1024px) {

	.isotope-item {
		display: inline-block;
		width: 48%; /* Adjust the width of each item based on the number of columns you want */
		margin: 0 1% 20px; /* Adjust the margin between items and add margin below each item */
		vertical-align: top; /* Align items to the top of the container */
		box-sizing: border-box; /* Include padding and border in the width and height */
	}

}