CSS border-block property example at PNLdev

Run
<!DOCTYPE html>
<html>
<head>
<style>
    h1, h2, div {
    background-color: lightblue;
}
    h1 {
    border-block: 20px solid green;
}
    h2 {
    border-block: 10px dotted red;
}
    div {
    border-block: double;
}
</style>
</head>
<body>
    <h1>border-block property example</h1>
    <h2>A heading with a dotted blue border in the block direction</h2>
    <div>A div element with a double border in the block direction.</div>
</body>
</html>