Give a Background Color to a div Element
The background-color property in CSS is used to specify the background color of an element. The background covers the total size of the element with padding and border but excluding margin. It makes the text so easy to read for the user and the background property is a shorthand property for background-color.
Keep in mind that periods and classes go together. A "period" is defined as a specific time in the day when you have some scheduled school activity. A "class" is defined as a period during which you receive instruction