.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: red;
    text-align: center;
}

@media only screen and (max-width: 1200px) {
	.footer {
	    position: fixed;
	    left: 0;
	    bottom: 0;
	    width: 100%;
	    background-color: red;
	    text-align: center;
	}
}
@media only screen and (max-width: 768px) {
	.footer {
	    position: fixed;
	    left: 0;
	    bottom: 0;
	    width: 100%;
	    background-color: red;
	    text-align: center;
	}
}
@media only screen and (max-width: 425px) {
	.footer {
	    position: fixed;
	    left: 0;
	    bottom: 0;
	    width: 100%;
	    background-color: red;
	    text-align: center;
	}
}