A Pen by Charles Anifowose.

dHrfs.markdown

dHrfs

A Pen by Charles Anifowose on CodePen.

License.

index.html

<table>
  <tr>
    <td>
      col1
    </td>
    <td class="fill-input">
      <input placeholder="Type here"/>
    </td>
  </tr>
</table>

style.less

table { 
  border-collapse: collapse;
}
table td {
  border:1px solid #ccc; 
  padding:4px 8px;
}
td.fill-input {
  padding:0px;
}
td.fill-input {
  input,
  input[type=text],
  input[type=text]:hover,
  input[type=text]:focus,
  input[type=text]:active {
    border:none;
    border-radius:none;
    outline: none;
    outline-offset: 0;
    
    box-sizing:border-box;
    -moz-box-sizing:border-box;
    
    height:100%;
    width:100%;
    
    padding:4px 8px;
  }
}