Input stepping down

[Leonido]

I'm having a step down issue with my registration form, I've tried everything I can find on google but nothing works. My DOB section is split into 3 different input boxes, I'm trying to get the right column up beside the left but as soon as I put any styling on it, the year section steps down.I've tried so many different variations; Float, display, nothing works. Also I've added extra boxes and it's always after the first 2 boxes the step down happens. http://postimage.org/image/8vjrzy7ap/When I try to style, notice the year step downhttp://postimage.org/image/kiufxmg1v/Always steps down after 2 no matter what order\[code\]<div id="regforms"> <form method="post" action="register.php" name="registerform" id="registerform"> <fieldset2> <div id="regforms1"> <label for="username"></label><input type="text" name="username" id="username" placeholder="Username"/><br /> <label for="password"></label><input type="password" name="password" id="password" placeholder="Password"/><br /> <label for="email"></label><input type="text" name="email" id="email" placeholder="Email"/><br /> <input type="submit" name="register" id="login" value="http://stackoverflow.com/questions/14561638/Register" /> </div> <div id="regforms2"> <label for="name"></label><input type="text" name="name" id="name" placeholder="Name"/><br /> <div id="dob"> <label for="dobm"><input type="text" name="month" id="month" placeholder="MM"/><br /> <label for="dobd"><input type="text" name="day" id="day" placeholder="DD"/><br /> <label for="dobd"><input type="text" name="day" id="day" placeholder="DD"/><br /> <label for="dobd"><input type="text" name="day" id="day" placeholder="DD"/><br /> <label for="doby"><input type="text" name="year" id="year" placeholder="YYYY"/><br /> </div> </div> </fieldset3> </form> </div>/************** Register **************/#regforms {margin-top:200px;border: 0; display:block;width:600px;}#regforms1 {padding-right:25px;width:275px;float:left;}#regforms2 {width:275px;float:right;}#dob {}#month{width:5%;margin-right:5px;}#day{width:10%;margin-right:5px;}#year{width:10%;margin-right:5px;}\[/code\]