Svetofor

IntSMIPPP

by certainlyakey

HTML

<div id="svetofor">

<div id="first">
    
</div>

    <div id="second">
    
</div>
    
<div id="third">
    
</div>

</div>

CSS

div div {width:300px; height:250px;}
#first {background-color:red;}
#second {background-color:yellow;}
#third {background-color:green;}