<form method="post">
<input type="text" name="domnam" placeholder="Domain name"> </input>
<select class="sel">
<option value="Subdomain">Subdomain</option>
<option value="IP">IP</option>
<option value="WhoIS">WhoIS</option>
<option value="Alexa">Alexa</option>
</select>
<input type="submit" value="Check" class="submitter"></input>
</form>