Tutoring web design, you might get asked about some basics. The tutor mentions the rule of thirds.
the idea that two-thirds of a line should be one style of content, then the remaining third, a different one.
Examples: two-thirds text, then one third image; two-thirds one color, then one different, etc.
Beaird, Jason. The Principles of Beautiful Web Design. SitePoint Pty. Ltd., 2010.
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.