How do i make it so that a drop-down menu only shows at half or quarter window size : Like on <a href="https://uk.ign.com/">IGN</a> i would like to make it so that within my E-Magazine i can change the top tabs from the line layout, to a drop down menu, like IGN does when the website window is made too small. Any help you can give would make me extremely helpful as i am new to web development and coding.