<h1>Hello World!</h1>h1{
color: blue;
background-color: red;
}
External CSS
This Pen doesn't use any external CSS resources.
External JavaScript
This Pen doesn't use any external JavaScript resources.
<h1>Hello World!</h1>h1{
color: blue;
background-color: red;
}
This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.