unity

design principles

balance
2. Proximity/unity
3.alignment
4.repetition/consistency
5.contrast
6. white space

balance :  Graphics don’t overpower text

Proximity/unity : Used to demonstrate a relationship or alack of relationship between elements such as

alignment : Justification of elements  

Repetition/consistency : Consistent pattern of font and colorschemes and graphic types; repeated fonts,color schemes, or graphics  

Contrast : the use of color and size to emphasize themost important elements on a page for example:Use black font on a light pink colored page  Use white font on black paper  Use light gray on dark blue

White space