How do I construct a {display:none} media query -just for the min-height declaration (see below), and not pertaining to #right-column, since I want to keep the padding/color?

If I make a class for min-height alone, it doesn't work because #right-column is a fluid span (bootstrap) and doesn't accept the additional class on that div.

Code:
#right-column {
	padding-top: 20px;
	background-color: #008080;
        min-height: 525px;
}
Thank you