CSS Class Syntax
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By using a dot (.) followed by the class name,you declare a CSS class. You make up the class name yourself. If you want to enter the properties/values to your class ,you can assign it after the class name.
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.class-name { property:value; }
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You can prefix the dot with the HTML element name if you want to use the same class name for multiple elements, but each with a different style.
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html-element-name.class-name { property:value; }
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You could define style sheet classes for each, if you want a purple font paragraph and a blue font paragraph.
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.purple {
font-family: verdana, arial, helvetica, sans-serif;
size: 12pt;
color: #003399;
}
.blue {
font-family: verdana, arial, helvetica, sans-serif;
size: 12pt;
color: #663399;
}
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Then apply this to different paragraphs using following code:
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<p
class="purple">The
purple paragraph text
will go here.</p>
<p
class="blue">The
blue paragraph
text will go
here.</p>
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The <span> tag
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Using the <span> tag, you can also apply this to sections of html like this:
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<p
class="purple">This
text will be purple
until you get to
<span
class="blue">these
words, which are
blue</span> and
then the text
carries on being
purple.</p>
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If you wish to display code in a different color depending on its language:
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code.html { color: #4b0082 }
code.css { color: #191970 }
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For example, using class~="pastoral", we can assign style information to all elements as follows:
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*.pastoral { color: green } /* all elements with class~=pastoral */
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The following assigns style only to H2 elements with class~="pastoral":
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H2.pastoral { color: green } /* H1 elements with class~=pastoral */
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Given these rules, the first H2 instance below would not have green text, while the second would:
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<H2>Not green</H2>
<H2 class="pastoral">Very green</H2>
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Without an associated element, you can declare classes as follows:
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.note { font-size: small }
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CSS Class Example
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<head>
<style type="text/css">
h1.css-section { color:#999999;}
p.css-section { color:#000099; }
</style>
</head>
<body>
<h1 class="css-section">CSS Class</h1>
<p class="css-section">CSS classes can be very useful</p>
</body>
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CSS Class
CSS classes can be very useful
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