CSS Comments & Colors
CSS Comments
- CSS comments are not displayed in the browser, but they can help document your source code.
- Comments are used to explain the code, and may help when you edit the source code at a later date.
- Comments are ignored by browsers.
A CSS comment is placed inside the <style> element, and starts with /* and ends with */:
Example
/* This is a single-line comment */
p {
color: red;
}
- You can add comments wherever you want in the code:
Example
p {
color: red; /* Set text color to red */
}
- Comments can also span multiple lines:
Example
/* This is
a multi-line
comment */
p {
color: red;
}
HTML and CSS Comments
- From the HTML tutorial, you learned that you can add comments to your HTML source by using the <!--...--> syntax.
In the following example, we use a combination of HTML and CSS comments:
<!DOCTYPE html>
<html>
<head>
<style>
p {
color: red; /* Set text color to red */
}
</style>
</head>
<body>
<h2>My Heading</h2>
<!-- These paragraphs will be red -->
<p>Hello World!</p>
<p>This paragraph is styled with CSS.</p>
<p>CSS comments are not shown in the output.</p>
</body>
</html>
CSS Colors
Colors are specified using predefined color names, or RGB, HEX, HSL, RGBA, HSLA values.
CSS Color Names
In CSS, a color can be specified by using a predefined color name:
CSS/HTML support 140 standard color names.
CSS Background Color
You can set the background color for HTML elements:
Example
<h1 style="background-color:DodgerBlue;">Hello World</h1>
<p style="background-color:Tomato;">Lorem ipsum...</p>
CSS Text Color
You can set the color of text:
Example
<h1 style="color:Tomato;">Hello World</h1>
<p style="color:DodgerBlue;">Lorem ipsum...</p>
<p style="color:MediumSeaGreen;">Ut wisi enim...</p>
CSS Border Color
You can set the color of borders:
CSS Color Values
In CSS, colors can also be specified using RGB values, HEX values, HSL values, RGBA values, and HSLA values:
Same as color name "Tomato":
Same as color name "Tomato", but 50% transparent:
Example
<h1 style="background-color:rgb(255, 99, 71);">...</h1>
<h1 style="background-color:#ff6347;">...</h1>
<h1 style="background-color:hsl(9, 100%, 64%);">...</h1>
<h1 style="background-color:rgba(255, 99, 71, 0.5);">...</h1>
<h1 style="background-color:hsla(9, 100%, 64%, 0.5);">...</h1>
