update

index.md

@@ -15,7 +15,7 @@ By aligning with ISO/IEC 27001 principles, Delveline helps raise security awaren
 
 ![delvelin process](https://github.com/delvelin/blog/blob/master/_posts/how-it-works-hand-write-green-line.png?raw=true)
 
-<a href="https://delvelin.github.io/blog/how-it-works/">Read more</a>
+<a href="https://delvelin.github.io/blog/how-it-works/" class="btn">Read more</a>
 
 <!-- ## **Features**