corrected width for social media app for all media width using rem property (#271)

* Update _home.scss and update .btn-twitter-follow

 .btn-twitter-follow {
      width: 120px;
    }
is changed to
 .btn-twitter-follow {
      width: 20rem;
    }
and update (follow @bestie js) twitter button width issue and its compatible with all media width , Thank You

* Update _home.scss

Change made in .btn-twitter-follow class and width change using rem property so it work perfectly in all media width rather then we hardcore pixel value

---------

Co-authored-by: Bhavya Patel <100468926+Bhavya200392@users.noreply.github.com>

Author: BhavyaMPatel

assets/css/_home.scss

@@ -42,11 +42,11 @@ html.home {
     }
 
     .btn-gh {
-      width: 115px;
+      width: 10rem;
     }
 
     .btn-twitter-follow {
-      width: 136px;
+      width: 16rem;
     }
 
     .btn-twitter-share {