console
<main class="wrapper1 clearfix">
<section class="center">center</section>
<section class="left">left</section>
<section class="right">right</section>
</main>
.clearfix::after {
display: block;
clear: both;
content: "";
}
section {
float: left;
width: 200px;
font-weight: 700;
text-align: center;
text-transform: uppercase;
line-height: 100px;
color: #fff;
background-color: #066;
}
.center {
width: 100%;
padding: 0 200px;
background-color: #099;
box-sizing: border-box;
}
.left {
margin-left: -100%;
}
.right {
margin-left: -200px;
}