When crafting a user interface, consider the following visual properties for each element and group of elements. Each property must be applied with care to create a useful and engaging user interface.

• 在设计用户界面时，我们要考虑每个元素和每组原色的视觉属性，必须小心运用每个属性才能创造出有用并让人喜欢的用户界面。