# HTML Styles - CSS ### What is CSS? Cascading Style Sheets (CSS) is used to format the layout of a webpage. With CSS, you can control the color, font, the size of text, the spacing between elements, how elements are positioned and laid out, what background images or background colors are to be used, different displays for different devices and screen sizes, and much more! ### Using CSS CSS can be added to HTML documents in 3 ways: * **Inline** - by using the `style` attribute inside HTML elements * **Internal** - by using a `

This is a heading

This is a paragraph.

``` {% endcode %} ### External CSS An external style sheet is used to define the style for many HTML pages. To use an external style sheet, add a link to it in the `` section of each HTML page: {% code overflow="wrap" lineNumbers="true" %} ```html

This is a heading

This is a paragraph.

``` {% endcode %} The external style sheet can be written in any text editor. The file must not contain any HTML code, and must be saved with a .css extension. Here is what the "styles.css" file looks like: {% code overflow="wrap" lineNumbers="true" %} ```css body { background-color: powderblue; } h1 { color: blue; } p { color: red; } ``` {% endcode %} ### CSS Colors, Fonts and Sizes Here, we will demonstrate some commonly used CSS properties. You will learn more about them later. The CSS `color` property defines the text color to be used. The CSS `font-family` property defines the font to be used. The CSS `font-size` property defines the text size to be used. {% code title="Use of CSS color, font-family and font-size properties:" overflow="wrap" lineNumbers="true" %} ```html

This is a heading

This is a paragraph.

``` {% endcode %}

// CSS Border
p {
  border: 2px solid powderblue;
}

// CSS Padding
p {
  border: 2px solid powderblue;
  padding: 30px;
}

// CSS Margin
p {
  border: 2px solid powderblue;
  margin: 50px;
}

### Link to External CSS {% code overflow="wrap" lineNumbers="true" %} ```html ``` {% endcode %} ### Summary * Use the HTML `style` attribute for inline styling * Use the HTML `