Untitled

<!DOCTYPE html>
<html>
<body>
<style>
    div h1 {
    	color: black
    }

    .clicked ~ h1 {
    	color: #ccc
    }
</style>

<div>
<h1>oiaoeiaoeiae</h1>
<h1>oiaoeiaoeiae</h1>

<h1>oiaoeiaoeiae</h1>
<h1>oiaoeiaoeiae</h1>

<h1>oiaoeiaoeiae</h1>
<h1 class="clicked">marcador</h1>
<h1>oiaoeiaoeiae</h1>
<h1>agieihaghieag</h1>
</div>

</body>
</html>