<p a><p b><p c><p d> <!-- instead of using class(<p class="a"></p>) or id(<p id="a">) simply uses <p a></p> or <p> -->
<style>
*{
margin:0;
background:#62374e;
}
p {
width: 50px;
height:50px;
background:#fdc57b;
position:fixed;
}
p[a],p[c]{ /*instead of using .a(for class) or #a(for id) can be called p[a] with p tag or just [a] with square brackets*/
left:50px
}
p[a],p[b]{
top:50px
}
p[b],p[d]{
left:300px
}
p[c],p[d]{
top:200px
}
</style>