Give a CSS Element a specific class

Can all h3 elements be styled with the class responsive-heading using only CSS? Take a look at the CSS snippet provided for more clarity:

h3 { .responsive-heading }

/* The responsive-heading class is defined in another CSS file and includes:
    .responsive-heading { font-size: 30px; .... etc. }
*/

Although I am considering Javascript or JQuery to add the .responsive-heading class to each h3, I want to explore if there is a pure css solution first.

In essence, I aim to apply the style of .responsive-heading to all h3 tags across multiple pages that need updating.

javascripthtmlcss

Answer №1

It's been mentioned that you are unable to perform that action.

Nevertheless, within your CSS, you have the option to easily add the identical styles to H3s.

h3, .responsive-heading {...styles...}

Answer №2

Sorry, but it's not possible to alter the class of an element using only css.

Answer №3

If you are considering making changes to the external css file,

You have the option to modify the selector to

h3, .responsive-heading {
    ...styles...
}

Alternatively, you could simply apply the style rules of .responsive-heading to your h3 styles if you are certain that all h3 elements should have this styling.

Furthermore, dealing with hundreds of pages is not as overwhelming as it may seem. If I were in your shoes, I would search for h3 elements within my code and add the necessary class to each one where applicable.

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