Common CSS Properties

Property Description Example
font-size The font-size CSS property is used to set text sizes. Font size values can be many different units or types such as pixels. font-size: 30px;
background-color The background-color CSS property controls the background color of elements. background-color: #000000
!important The CSS !important rule is used on declarations to override any other declarations for a property and ignore selector specificity. !important rules will ensure that a specific declaration always applies to the matched elements. However, generally it is good to avoid using !important as bad practice. font-size: 30px !important
opacity The opacity CSS property can be used to control the transparency of an element. The value of this property ranges from 0 (transparent) to 1 (opaque). opacity: 0.5;
font-weight The font-weight CSS property can be used to set the weight (boldness) of text. The provided value can be a keyword such as bold or normal. font-weight: bold;
text-align The text-align CSS property can be used to set the text alignment of inline contents. This property can be set to these values: left, right, or center. text-align: right;
color Using the color property, foreground text color of an element can be set in CSS. The value can be a valid color name supported in CSS like green or blue. Also, 3 digit or 6 digit color code like #22f or #2a2aff can be used to set the color. color: #2a2aff;
background-image The background-image CSS property sets the background image of an element. An image URL should be provided in the syntax url("moon.jpg") as the value of the property. background-image:
url("nyan-cat.gif");
font-family The font-family CSS property is used to specify the typeface in a rule set. Fonts must be available to the browser to display correctly, either on the computer or linked as a web font. If a font value is not available, browsers will display their default font. When using a multi-word font name, it is best practice to wrap them in quotes. font-family: "Courier New";