4 div - 2 toward 2

HTML

<div class="myField">
    <input type="text" placeholder="1" /> 
	</div>
	<div class="myField">
		<input type="text" placeholder="2" />
	</div>
	<div class="myField">
		<input type="text" placeholder="3" />
	</div>
	<div class="myField">
		<input type="text" placeholder="4" />
	</div>
    <div class="myField">
		<input type="text" placeholder="5" />
	</div>
	<div class="myField">
		<input type="text" placeholder="6" />
	</div>

CSS

.myField {display:inline;}
.myField:nth-child(2n+2):after {
  content: "";
  display: block;
  clear: both;
}