BEST SITE FOR WEB DEVELOPERS

CSS Tutorial

CSS HOME CSS Introduction CSS Syntax CSS Selectors CSS How To CSS Comments CSS Colors CSS Backgrounds CSS Borders CSS Margins CSS Padding CSS Height/Width CSS Box Model CSS Outline CSS Text CSS Fonts CSS Icons CSS Links CSS Lists CSS Tables CSS Display CSS Max-width CSS Position CSS Z-index CSS Overflow CSS Float CSS Inline-block CSS Align CSS Combinators CSS Pseudo-class CSS Pseudo-element CSS Opacity CSS Navigation Bar CSS Dropdowns CSS Image Gallery CSS Image Sprites CSS Attr Selectors CSS Forms CSS Counters CSS Website Layout CSS Units CSS Specificity CSS !important CSS Math Functions

CSS Advanced

CSS Rounded Corners CSS Border Images CSS Backgrounds CSS Colors CSS Color Keywords CSS Gradients CSS Shadows CSS Text Effects CSS Web Fonts CSS 2D Transforms CSS 3D Transforms CSS Transitions CSS Animations CSS Tooltips CSS Style Images CSS Image Reflection CSS object-fit CSS object-position CSS Masking CSS Buttons CSS Pagination CSS Multiple Columns CSS User Interface CSS Variables CSS Box Sizing CSS Media Queries CSS MQ Examples CSS Flexbox

CSS Responsive

RWD Intro RWD Viewport RWD Grid View RWD Media Queries RWD Images RWD Videos RWD Frameworks RWD Templates

CSS Grid

Grid Intro Grid Container Grid Item

CSS SASS

SASS Tutorial

CSS Examples

CSS Templates CSS Examples CSS Snippets CSS Quiz CSS Exercises CSS Certificate

CSS References

CSS Reference CSS Selectors CSS Functions CSS Reference Aural CSS Web Safe Fonts CSS Animatable CSS Units CSS PX-EM Converter CSS Colors CSS Color Values CSS Default Values CSS Browser Support

CSS Lessons for beginners

Ua Es De

CSS Selectors


A CSS selector selects the HTML element(s) you want to style.


CSS Selectors

CSS selectors are used to "find" (or select) the HTML elements you want to style.

We can divide CSS selectors into five categories:

This page will explain the most basic CSS selectors.


The CSS element Selector

The element selector selects HTML elements based on the element name.

Example

Here, all <p> elements on the page will be center-aligned, with a red text color:

p {
  text-align: center;
  color: red;
}
Try it Yourself »

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;
}
Try it Yourself »

Note: An id name cannot start with a number!


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;
}
Try it Yourself »

You can also specify that only specific HTML elements should be affected by a class.

Example

In this example only <p> elements with class="center" will be red and center-aligned:

p.center {
  text-align: center;
  color: red;
}
Try it Yourself »

HTML elements can also refer to more than one class.

Example

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>
Try it Yourself »

Note: A class name cannot start with a number!


The CSS Universal Selector

The universal selector (*) selects all HTML elements on the page.

Example

The CSS rule below will affect every HTML element on the page: 

* {
  text-align: center;
  color: blue;
}
Try it Yourself »

The CSS Grouping Selector

The grouping selector selects all the HTML elements with the same style definitions.

Look at the following 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;
}

It will be better to group the selectors, to minimize the code.

To group selectors, separate each selector with a comma.

Example

In this example, we have grouped the selectors from the code above:

h1, h2, p {
 text-align: center;
  color: red;
}
Try it Yourself »

Test Yourself With Exercises

Exercise:

Set the color of all <p> elements to red.

<style>
 {
   red;
}
</style>


All CSS Simple Selectors

Selector Example Example description
#id #firstname Select the element with id="firstname"
.class .intro Selects all elements with class="intro"
element.class p.intro Select only <p> elements with class="intro"
* * Selects all elements
element p Selects all <p> elements
element,element,.. div, p Selects all <div> elements and all <p> elements

CSS — Simple Selectors — W3Schools Video

Video covering simple selectors like an element, ID, and class in CSS.

Part of a series of video tutorials to learn CSS for beginners!



Comments