<!doctype html>
<meta charset="utf-8">
<style>
.foo {
color:blue;
background-color:yellow;
}
.bar {
background-color:orange;
}
.bar-over-foo {
color:blue;
background-color:orange;
}
</style>
<body><span class="foo">Som</span><span class="bar-over-foo">e t</span><span class="bar">ext</span>