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#numOne{
width:60%;
background:red;
height:60vh;
}
#squareOne{
background:green;
width:50%;
height:40vh;
float:left;
}
#squareTwo{
background:blue;
width:50%;
height:40vh;
float:left;
}
#wrapperDiv{
width:60%;
}
body{
margin:0;
padding:0;
}
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#numOne{
width:60%;
background:red;
height:60vh;
background-size:cover; background:url(http://lorempixel.com/output/cats-h-g-987-1010-10.jpg);
background-repeat: no-repeat;
background-position: center;
}
#squareOne{
background:green;
width:50%;
height:40vh;
float:left;
background-size:cover; background:url(http://lorempixel.com/output/cats-q-g-640-480-3.jpg);
background-repeat: no-repeat;
background-position: center;
}
#squareTwo{
background:blue;
width:50%;
height:40vh;
float:left;
background-size:cover; background:url(http://lorempixel.com/output/cats-q-g-640-480-3.jpg);
background-repeat: no-repeat;
background-position: center;
}
#wrapperDiv{
width:60%;
}
body{
margin:0;
padding:0;
}
<div id="container">
<div id="numOne">
</div>
<div id="wrapperDiv">
<div id="squareOne">
</div>
<div id="squareTwo">
</div>
</div>
</div>