CSS stands for Cascading Style Sheets and is used to style and layout web pages. Here's a brief overview of CSS to get you started:

Basic syntax: CSS uses selectors to target HTML elements and declarations to set the styles for those elements. Here's an example of a basic CSS rule:

selector {

property: value;

}

Selectors: There are different types of selectors you can use to target HTML elements. Here are a few examples:

· Element selector: targets all instances of an HTML element. For example, p targets all paragraphs.

· Class selector: targets elements with a specific class attribute. For example, .my-class targets all elements with the class "my-class".

· ID selector: targets an element with a specific ID attribute. For example, #my-id targets the element with the ID "my-id".

Properties and values: CSS has a wide range of properties and values that you can use to set styles for HTML elements. Here are a few examples:

· color: sets the color of text.

· font-family: sets the font family of text.

· background-color: sets the background color of an element.

· padding: sets the padding of an element (the space between the element's content and its border).

· border: sets the border of an element.

· Box model: CSS uses a box model to define the layout of HTML elements. The box model includes properties like padding, border, and margin, which affect the size and position of elements on a page.

· Layout: CSS can be used to create complex layouts for web pages. Some common layout techniques include using floats, positioning, and using CSS grid.

· Responsive design: CSS can be used to create responsive designs that adapt to different screen sizes. This involves using media queries to apply different styles to elements based on the size of the device.

There's much more to CSS than this brief overview, but these are some of the key concepts you'll need to understand to get started.