CSS Style Selectors

Class Selector

span.class-name, ... {
   property: value;
   ...
}

<span class="class-name">phrasing content<span>

id Selector

span#id-value, ... {
   property: value;
   ...
}

<span id="id-value">phrasing content<span>

Pseudo-class Selector

span:pseudo-class-name, ... {
   property: value;
   ...
}

Context Selector

context-selector selector, ... {
   property: value;
   ...
}

div.context-class-name span.class-name, ... {
   ...
}

<div class="context-class-name">
   <span class="class-name">phrasing content<span>
</div>