Can CSS IDs be numbers?

In CSS, identifiers (including element names, classes, and IDs in selectors) can contain only the characters [a-zA-Z0-9] and ISO 10646 characters U+00A0 and higher, plus the hyphen (-) and the underscore (_); they cannot start with a digit, two hyphens, or a hyphen followed by a digit.

Can ID selector be a number?

Can I have a div with id as number? Yes, you can. id values that consist solely of digits are perfectly valid in HTML; anything but a space is okay.

How do you reference a CSS ID?

A CSS ID selector uses the ID attribute of an HTML element to select one unique element on a page. To use an ID selector in CSS, you simply write a hashtag (#) followed by the ID of the element.

Can ID name start with a number?

Class identifiers are allowed to start with a number, but ID identifiers are not.

Can a CSS ID start with a number?

However that doesn’t mean that CSS is happy to have an ID selector starting with a number. For example, this will not work: That’s because even though HTML5 is quite happy for an ID to start with a number, CSS is not. CSS simply doesn’t allow selectors to begin with a number.

Can a CSS selector start with a number?

HTML5 supports numbers as id and class name , but css selector have some rules , A valid name should start with a letter (a-z)[A-Z] , an underscore (_), or a hyphen (-) which is followed by any

How does the ID selector work in CSS?

CSS id selectors select any element in an HTML page, if it has an attribute called id, whose value matches the name of the id selector. In a stylesheet document, the name of the id selector is preceded by a ” # “.

How to create a numbered list in CSS?

Now if we finished here, you would still get a numbered list by using the html ordered list tag ( ), but the numbers would be plain and boring, by using the css counter-reset and counter-increment properties, we will be able to style the numbers with ease.