<!DOCTYPE html>
<html>
<head>
<style>
.floating-box {
    float: left;
    width: 150px;
    height: 75px;
    margin: 10px;
    border: 3px solid #73AD21;  
}


.after-box {
    clear: left;
    border: 3px solid red;      
}

</style>
</head>
<body>

<h2>The Old Way - using float</h2>

<div class="floating-box">Floating box</div>
<div class="floating-box">Floating box</div>
<div class="floating-box">Floating box</div>
<div class="floating-box">Floating box</div>
<div class="floating-box">Floating box</div>
<div class="floating-box">Floating box</div>
<div class="floating-box">Floating box</div>
<div class="floating-box">Floating box</div>

<div class="after-box">Another box, after the floating boxes...</div>

</body>
</html>