CSS Selectors - W3Schools
To select an element with a specific id, write a hash (#) character, followed by the id of the element. The CSS rule below will be applied to the HTML element with id="para1": Note: An id name cannot start …
CSS ID and Class Selectors | W3Docs
Now we will speak about id and class selectors frequently used to style web page elements.
Difference between id and class Attributes in HTML
Aug 5, 2025 · The id attribute uniquely identifies a single element, while the class attribute can be applied to multiple elements. Both are essential for CSS styling and JavaScript …
What's the difference between an id and a class? - Stack Overflow
Feb 13, 2009 · In the CSS, a class selector is a name preceded by a full stop (“.”) and an ID selector is a name preceded by a hash character (“#”). The difference between an ID and a class is that an ID can …
CSS: ID vs Class — What’s the Difference? - Life in Coding
In this guide, we’ll break down the key differences between IDs and Classes, explain when to use each, and provide practical examples to help you make the right choice in your next project.
ID selectors - CSS - MDN
Nov 7, 2025 · The CSS ID selector matches an element based on the value of the element's id attribute. In order for the element to be selected, its id attribute must match exactly the value given in the …
ID vs Class: Which CSS Selector Should You Use?
Nov 3, 2025 · The ID attribute is used to uniquely identify a single element within a web page, while the class attribute is used to apply styles to multiple elements with the same class name.
HTML Class vs ID: What’s the Difference and When to Use Each
Learn the key differences between HTML `id` and `class` attributes with syntax, examples, and use cases. Explore when to use each and compare them for a better understanding.
ID - CSS-Tricks
Sep 6, 2011 · The #id selector allows you to target an element by referencing the id HTML attribute. Similar to how class attributes are denoted in CSS with a “period” (.) before the class name, ID …