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The id selector uses the id attribute of an HTML element to select a specific element.The id of an element should be unique within a page, so the id selector is used to select one unique element! To select an element with a specific id, write a hash (#) character, followed by the id of the element. The style rule below will be applied to the HTML element with id=”para1″:
Example 1
.center {
text-align: center;
color: red;
}You can also specify that only specific HTML elements should be affected by a class.In the example below, only <p> elements with class=”center” will be center-aligned:
Example 2
p.center {
text-align: center;
color: red;
}HTML elements can also refer to more than one class. In the example below, the <p> element will be styled according to class=”center” and to class=”large”:
