Check out example codes for "add external css to html". It will help you in understanding the concepts better.

Code Example 1

<link rel="stylesheet" type="text/css" href="style.css">

Code Example 2

<link rel="stylesheet" href="styles.css">

Code Example 3

<!DOCTYPE html>

 body {background-color: powderblue;}
h1   {color: blue;}
p    {color: red;}


<h1>This is a 
<p>This is a paragraph.</p>


Code Example 4


      <link rel="stylesheet" type="text/css" href="theme.css">


Code Example 5

Adding css file into html document

<link rel="stylesheet" type="text/css" href="yourstylesheetname.css">  /* add this line into head tag of the file with change in file name. */

I hope it will help you.

Code Example 6

<link rel="stylesheet" href="styles.css">

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