title: How to add border on table cells, but not the whole table on html?
body: <p>I'm trying to add a border on table cells but I cannot figure out how to do it with rowspan.</p>
  
  <p>I want a table that has 4 cells
  1 big cell on the left and 3 small cells on the right of the big one.</p>
  
  <p>Here's the code I used</p>
  
  <p>jsfiddle[dot]net/1fv4dz5g/3/</p>