how to change color of selected text in css code example

Example 1: custom selection color css

::selection {
	color: #000000;
	background-color: red;
}

/* for firefox */
::moz-selection {
	color: #000000;
	background-color: red;
}

Example 2: change highlight color html

::-moz-selection { /* Code for Firefox */
  color: red;
  background: yellow;
}

::selection {
  color: red;
  background: yellow;
}

Example 3: how to change selection color of text in css

::-moz-selection { /* Code for Firefox */
  color: red;
  
  background: yellow;
}

::selection {
  color: red;
  background: 
  yellow;
}

Example 4: css mark color

<style>
mark { 
  background-color: yellow;
  color: black;
}
</style>

<mark>Highlighted text!!</mark>