JSFiddle - React, Tailwind, and code Playground

HTML

<div id="content">
    <div id="item"></div>
    <div id="item"></div>
    <div id="item"></div>
    <div id="item"></div>
    <div id="item"></div>
    <div id="item"></div>
    <div id="item"></div>
    <div class="clear"></div>
</div>

CSS

#content {
margin: 0px auto;
margin-top: 10px;
border: 1px solid;
width: 920px;
}
.clear {
    clear:both;
}
#item {
display: block;
width: 220px;
height: 250px;
border: 1px solid;
margin-left: 6px;
margin-bottom: 5px;
float: left;
}