Как расположить блоки под другими блоками?

<div class="order">
	<div class="container-fluid">
		<div class="row">
			<div class="col-md-12">
				<h2>Lorem ipsum dolor sit atmet</h2>
			</div>
		</div>
	</div>
	<div class="colonki">
		<div class="container">
			<div class="row">
				<div class="col-md-4">
					<div class="item">
						<p>Morbi venenatis, nulla at accumsan fermentum, risus ligula vehicula justo, a dapibus arcu purus et arcu</p>
					</div>
				</div>
				<div class="col-md-4">
					<div class="item">
						<p>Morbi venenatis, nulla at accumsan fermentum, risus ligula vehicula justo, a dapibus arcu purus et arcu</p>
					</div>
				</div>
				<div class="col-md-4">
					<div class="item">
						<p>Morbi venenatis, nulla at accumsan fermentum, risus ligula vehicula justo, a dapibus arcu purus et arcu</p>
					</div>
				</div>
			</div>
			<div class="row author">
				<div class="col-md-4">
					<div class="otziv"></div>
				</div>
				<div class="col-md-4">
					<div class="otziv"></div>
				</div>
				<div class="col-md-4">
					<div class="otziv"></div>
				</div>
			</div>
		</div>
	</div>
</div>

.order .author {
  padding-top: 10px;
}