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<!DOCTYPE html>
<style>
.container {
position: relative;
width: 250px;
height: 300px;
border: 1px solid blue;
}
.float1 {
position: absolute;
width: 100px;
height: 50px;
background-color: green;
}
.float2 {
position: absolute;
top: 50px;
width: 180px;
height: 50px;
background-color: lightgreen;
}
.box {
position: absolute;
left: 180px;
width: 30px;
height: 80px;
background-color: blue;
}
</style>
<div class="container">
<div class="float1"></div>
<div class="float2"></div>
<div class="box"></div>
</div>
<p>The test pass if the inline blue box does not overlap any of the green float boxes.</p>