CSS border-left Property - Playground Example

<!DOCTYPE html><html><head><style type="text/css">.container {
    font-family: Arial, sans-serif;
    padding: 20px;
    max-width: 600px;
}

.box {
    padding: 12px 16px;
    margin: 12px 0;
    background: #f8f9fb;
    border-left: 8px solid #3498db;
}

.box.dashed {
    border-left: 6px dashed #e67e22;
}

.box.thick {
    border-left: 12px solid #2ecc71;
    box-shadow: inset 0 1px 0 rgba(0, 0, 0, 0.05);
}
</style></head><body><div class='container'>
    <h2>Border-left examples</h2>
    <div class='box solid'>Solid border-left</div>
    <div class='box dashed'>Dashed border-left</div>
    <div class='box thick'>Thick colored border-left</div>
</div></body></html>