To import styles from another style, use the @import rule. It should appear right at the start of the style sheet before any of the rules, and its value is a URL.
You can write it like this
<style>
<!--
@import "mystyle.css";
or
@import url("mystyle.css");
.......other CSS rules .....
-->
</style>The significance of the @import rule is that it allows you to develop your style sheets with a modular approach. You can create various style sheets and then include them wherever you need them.