@media only screen and (max-width: 900px) {
	footer .columna {
		width: 100% !important;
		padding: 0 20px;
	}
	
	footer .columna:last-child > ul > li {
	  width: 30%; 
	}
	#foot_img_2, #foot_img_4, #foot_img_5, #foot_img_7 {
	  width: 20%; 
	}
	#foot_img_6 {
	  width: 28%; 
	}
}
@media only screen and (max-width: 500px) {
	footer .columna:last-child > ul > li {
	  width: 60%; 
	}
	#foot_img_2, #foot_img_4, #foot_img_5, #foot_img_7 {
	  width: 40%; 
	}
	#foot_img_6 {
	  width: 56%; 
	}
}