JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
          <td><input type=text id=topTextbox /></td>
    </tr>
    <tr>
          <td>
              <select>
                <option value="0"></option>
                <option value="saab">Saab</option>
                <option value="mercedes">Mercedes</option>
              </select> 
              <div><input type="text" id="bottomTextbox" /></div>
           </td>
    </tr>
</table>

CSS

table{
        width: 100%;
    }
    input{
        box-sizing: border-box;
        width: 100%;
        overflow: hidden;
        clear: none;
    }
    select{
        float: left;
        margin-right: 5px;
    }
    div{
        overflow: hidden;
    }