@media (min-width: 590px) {

	#a_c_tres{
	    background-color: #CCC;
	    height: 150px;
	    position: relative;
	}
}

@media (min-width: 630px) {

	#a_c_dos{
	    background-color: #CCC;
	    height: 150px;
	    position: relative;
	}
}

@media (min-width: 672px) {

	#a_c_dos{
	    background-color: #CCC;
	    height: 170px;
	    position: relative;
	}

	#a_c_tres{
	    background-color: #CCC;
	    height: 170px;
	    position: relative;
	}
}

@media (min-width: 710px) {

	#a_c_dos{
	    background-color: #CCC;
	    height: 180px;
	    position: relative;
	}

	#a_c_tres{
	    background-color: #CCC;
	    height: 180px;
	    position: relative;
	}
}

@media (min-width: 788px) {

	#a_c_uno{
	    background-color: #CCC;
	    height: 200px;
	    position: relative;
	}

	#a_c_dos{
	    background-color: #CCC;
	    height: 200px;
	    position: relative;
	}

	#a_c_tres{
	    background-color: #CCC;
	    height: 200px;
	    position: relative;
	}
}

@media (min-width: 890px) {

	#a_c_uno{
	    background-color: #CCC;
	    height: 222px;
	    position: relative;
	}

	#a_c_dos{
	    background-color: #CCC;
	    height: 222px;
	    position: relative;
	}

	#a_c_tres{
	    background-color: #CCC;
	    height: 222px;
	    position: relative;
	}
}