CSS

INTRODUCTION
CSS are the powerful way to affect the presentation
of a document or collection of a document.

 Mozilla and related browsers use CSS to affect the
presentation of the browser Chrome itself.

Applying CSS

Uses
 We need to change the style of document.

 Easy to use.

 Time saving

Applying CSS example
<html>
<head>
<title> Untitled Document </title>
</head>
<body> HTML
<p> This is a paragraph </p>
</body>
</html>

<style type = "text/CSS">
p
{
color : black;
font : Arial;
CSS
}
</style>

Selectors
 A selector is most often an HTML element

H1
{
color : Red;
background : Yellow;
}

H1 Selector
color Property
Red Value

Grouping Selectors
H2, p
{
color : Gray;
background : Yellow;
}

H2, p Selector
color Property
Red Value
 Here we defined a rule where the style on the right
(color : Gray;) applies to elements referenced by
both selectors.

Universal selectors
 CSS2 introduced a new simple selectors called
universal selector
*{color: red;}

 Class selectors
<p.class="warning"> This is a sample slide</p>
<p> Hello world, <span class="warning"> good morning</p>
*.warning {font-weight: bold;}

Pseudo – Class selectors
 Pseudo – Class selectors are most supported by
browsers.

a. visited {color: red;}
a. link {color: blue;}
a. hover {color: purple;}
a. active {color: yellow;}

Advantages
 Save a lot of time

 Easy to use

 Page load faster

 Easy maintains

Disadvantages

 Browser compatibility.

 An extra download is required to import style
information for each document.

Conclusion

 CSS is the most powerful way to make the
website more attractive. CSS is easy to use
and learn.

CSS

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