Cascading Style Sheets: Difference between revisions
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</syntaxhighlight>Preview |
</syntaxhighlight>Preview with the HTML <code><button>button</button></code> used |
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[[File:Button made in css.png|frameless]] |
[[File:Button made in css.png|frameless]] |
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Revision as of 01:33, 2 February 2024
Cascading Style Sheets, or CSS, is a way to change the look of HTML and XHTML web pages. CSS was designed by the W3C, and is supported well by most modern web browsers. The current version of CSS is CSS3. CSS4 is available, but is split into parts.
One advantage to using CSS is a web page can still be displayed, even if the CSS is not working or removed.
CSS code is saved in files with the .css file extension.
CSS Examples
Paragraphs
To make all paragraphs on a page blue and sized 20% bigger than normal text, we would apply this CSS rule to a page:
p {
color: blue;
font-size: 120%;
background-color: white
}
The p
refers to all HTML elements with the <p>
tag. The CSS is being used to change this element. The color
and font-size
are both properties and the blue
and 120%
are values. Each property has a set of possible values. These values can be words or numbers.
Main Title
To give the main Title on a page a solid red border underneath, we would apply this CSS rule to the page. 5px otherwise known as pixels, represents the thickness of the line:
h1 {
border-bottom: 5px solid red;
}
The h1
refers to all HTML elements with the <h1>
tag. The CSS is being used to change this element. The border-bottom
is the property and the 5px
and solid red
are values. Each property has a set of possible values. These values can be words or numbers.
Button
To give a button a hover effect and make it blue with no border, we would apply this CSS rule to this page. The CSS is being used to change this element. The button refers to all HTML elements with the <button> tag.
button:hover {
padding:25px 35px;
}
button {
display: block;
color: white;
border:0px;
transition:0.3s;
text-align: center;
padding: 20px 27px;
text-decoration: none;
background-color: rgb(0, 150, 255);
border-radius: 15px;
font-size:18px;
}
Preview with the HTML <button>button</button>
used
Other websites