<p class="one">Hello World!</p>
p.one {
outline: 2px solid red;
}
External CSS
This Pen doesn't use any external CSS resources.
External JavaScript
This Pen doesn't use any external JavaScript resources.
<p class="one">Hello World!</p>
p.one {
outline: 2px solid red;
}This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.