How to maintain these html table input with proper alignment & margin consistent

i inserted some inputs with labels in html table.But their alignments & margin arr Not consistent.image given below:

I saw some manual solution like using padding & margins for each inputs.But is there any easy way to do that. here is the source code: Updates Month tag still not in same size.

<!DOCTYPE html>
<html>
   <head>
      <style>
         table, th, td {
         border: 1px solid black;
         border-collapse: collapse;
         }
      </style>
   </head>
   <body>
   <table style="">
<tr>
    <th colspan="2">Salary Entry</th>    
  </tr>
  <tr>
    <td>

       Month:  </td><td> <select name="SALMT" id="month" onchange="" size="1">
                <option value="" disabled selected>Month</option>
                <option value="01">January</option>
                <option value="02">February</option>
                <option value="03">March</option>
                <option value="04">April</option>
                <option value="05">May</option>
                <option value="06">June</option>
                <option value="07">July</option>
                <option value="08">August</option>
                <option value="09">September</option>
                <option value="10">October</option>
                <option value="11">November</option>
                <option value="12">December</option>
            </select>  

    </td>
    <td>

          Year:</td><td> <input type="text" name="SALYR" value="">
    </td>       

  </tr>

  <tr>
    <td>
         Employee ID:</td><td> <input type="text" name="EMPID" value="">
    </td>
    <td>
         Name: </td><td><input type="text" name="name" value="">  
    </td>       

  </tr>

 <tr>
    <td>
         Department Code:</td><td> <input type="text" name="DPTID" value="">
    </td>
    <td>
         Designation: </td><td><input type="text" name="designation" value=""> 
    </td>       

  </tr>

</table>

</body>
</html>

please let me know for any information.thanks.

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