Question 45245 in Html Question posted in
Some basic documentation can be found here.

What does Unknown Type Selector "button1"? – Html

Im more of a C++ and plain JS type of dude, and I feel absolutely stupid not being able to find this out.

I tried doing this

   <button1 id="coolbutton" type="button">

        My JSFiddle Account

      </button1>

along with this CSS code

button1 {
  
  font-family: Verdana;
  color: purple;
  background-color: grey;
  text-align: center;
  text-decoration-line: overline underline;
}

html {
  
  background-color: #666699;
  
}

body {
  
  background-color: #666699;
}

Not feeling so good about my "Epic Coding Skills" because I feel like it’s easier than I think.

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2

Answers


  1. 0

    The HTML Living Standard defines what element types exist in HTML (along with a format for naming custom elements.

    It defines, for example, button and html. It does not define button1, and button1 does not meet the custom element format.

    You have tried to create a button1 element in your HTML, which is invalid HTML and triggers error recovery in browsers.

    You have written a CSS type selector to try to select it, and whatever is reporting that error knows you are trying to find an element in an HTML document where button1 elements are not allowed.

    Use id and class attributes to define specific (or groups of specific) elements. Select the type based on the semantics it has. Don’t invent new types.

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  2. 0

    there is no <button1> element what you are looking for is simply the <button> </button>. Do your CSS on the coolButton id (or the id of the button you want to change)

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