Demo: CSS margin-left

<div class='container'>
    <div class='box'>Box 1</div>
    <div class='box'>Box 2</div>
</div>

.container {
    display: flex;
    background-color: #f0f0f0;
    padding: 20px;
}

.box {
    background-color: #4CAF50;
    color: white;
    padding: 20px;
    margin-left: 30px;
}

// No JavaScript required for this demo