How many way define css in html page?

You may add CSS in your website by following ways:

1st Way:

<stype type="text/css">

// Write your css style

</style>

2nd Way:

<link type="text/css" rel="stylesheet" href="http://css.b8cdn.com/css/all-bayt-128.css" media="all" />

3rd Way:

@import url("css/style.css");

There is various approach to define CSS

1. Document specific : you can define the css in head section using <style></style>

2. Link the external stylesheet : you can link the external css style by using <link rel="stylesheet" href="location of ur css file">

3. Inline style : you can define css inside the html element that will impact on the element the css dfined on it ex. : <h1 style="color: ..; font: ...";  ></h1>

If you are working on large project & you have bunch of CSS file you can import all css file into global css file using @import ex. @import reset.css & so on & then link the global css file in your html page so you don't need to link multiple css file in page.