CSS Tutorial
- CSS is the language we use to style an HTML document.
- CSS describes how HTML elements should be displayed.
- This tutorial will teach you CSS from basic to advanced.
- CSS stands for Cascading Style Sheets
- CSS describes how HTML elements are to be displayed on screen, paper, or in other media
- CSS saves a lot of work. It can control the layout of multiple web pages all at once
- External stylesheets are stored in CSS files
Why Use CSS?
CSS is used to define styles for your web pages, including the design, layout and variations in display for different devices and screen sizes.
CSS Syntax
h1{ color: blue; font-size: 12px}
(h1) : Selector.
{ color} : Property.
{blue; font-size} : Property
{12 px } : Value
- The selector points to the HTML element you want to style.
- The declaration block contains one or more declarations separated by semicolons.
- Each declaration includes a CSS property name and a value, separated by a colon.
- Multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces.
Example:
In this example all
elements will be center-aligned, with a red text color:
p {
color: red;
text-align: center;
}
- p is a selector in CSS (it points to the HTML element you want to style: <p>).
- color is a property, and red is the property value
- text-align is a property, and center is the property value
The CSS id Selector
- The id selector uses the id attribute of an HTML element to select a specific element.
- The id of an element is 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.
Example:
The CSS rule below will be applied to the HTML element with id=”para1“:
#para1 {
text-align: center;
color: red;
}
The CSS class Selector
- The class selector selects HTML elements with a specific class attribute.
- To select elements with a specific class, write a period (.) character, followed by the class name.
Example:
- In this example all HTML elements with class=”center” will be red and center-aligned:
.center {
text-align: center;
color: red;
}
- In this example only <p> elements with class=”center” will be red and center-aligned:
p.center {
text-align: center;
color: red;
}
- In this example the <p> element will be styled according to class=”center” and to class=”large“:
<p class=”center large“>This paragraph refers to two classes.</p>
The CSS Universal Selector:
The universal selector (*) selects all HTML elements on the page.
Example:
* {
text-align: center;
color: blue;
}
The CSS Grouping Selector:
- The grouping selector selects all the HTML elements with the same style definitions.
- Look at the next CSS code (the h1, h2, and p elements have the same style definitions):
h1 {
text-align: center;
color: red;
}
h2 {
text-align: center;
color: red;
}
p {
text-align: center;
color: red;
}
Example:
In this example we have grouped the selectors from the code above:
h1, h2, p {
text-align: center;
color: red;
}
CSS Tutorial:
body {
background-color: lightblue;
}
h1 {
color: white;
text-align: center;
}
p {
font-family: verdana;
font-size: 20px;
}
- <html>
- <head>
</head>
- <body>
<h1>My First CSS Example</h1>
<p>This is a paragraph.</p>
</body>
</html>
N.B:Please enter your css on this code.
CSS Reference (Properties):
body {
background-color: lightblue;
}
h1 {
color: white;
text-align: center;
}
p {
font-family: verdana;
font-size: 20px;
}
