Finally, we will be adding elements to the ground. These will mostly be buildings and trees, and they will be easy to add because they are also Font Awesome SVGs.
In the terra SECTION element, inside the ground DIV element, there are two DIV elements: give the first class left and green, and then give the second DIV element the right class. Then, in the left green DIV element, add a handful of trees from Font Awesome, and in the right DIV element, add a truck and some buildings from Font Awesome. Give the buildings the additional classes small and large. The terra SECTION element code looks like this now:
<section id="terra">
<div id="ground">
<div class="left green">
<i class="fa fa-tree"></i>
<i class="fa fa-tree"></i>
<i class="fa fa-tree"></i>
<i class="fa fa-tree"></i>
<i class="fa fa-tree"></i>
</div>
<div class="right">
<i class="fa fa-truck"></i>
<i class="fa fa-building small grey-1"></i>
<i class="fa fa-building small grey-2"></i>
<i class="fa fa-building large grey-1"></i>
<i class="fa fa-industry large grey-2"></i>
</div>
</div>
</section>So take a break and look at what it looks like in the browser; it's really just a bunch of stacked web icons. Our next task is to bring in some CSS style for the page-the load.
So go get a cup of coffee, and when we get back, we'll jump into some very simple CSS.

This is great so far, but the birds will not be very interesting if they have no color. So add some color classes to these elements. Look at this example:
<i class="fa fa-plane fa-5x silver"></i>
<i class="fa fa-twitter red"></i>
<i class="fa fa-twitter green"></i>
<i class="fa fa-twitter yellow"></i>
<i class="fa fa-twitter silver"></i>