<!DOCTYPE html>
<html>
 <head>
   <style>
     body > span { border: 3px solid blue }
     .notstart { border-left: none; }
     .notend { border-right: none; }
   </style>
 </head>
 <body>
   <span class="notend"></span>
   <div>One</div>
   <span class="notstart notend"></span>
   <div>Two</div>
   <span class="notstart"></span>
 </body>
</html>