 <div class="container">
            <h3>Grid System</h3>
            <div class="content">
                <h4>12 Columns Grid System</h4>
                <p>Use class <span class="color-secondary">.grids</span> on columns grid parent</p>
                <div class="wrapper">
                    <div><strong>mb</strong>: (&lt; 528px) Mobile Screen</div>
                    <div>grid-<strong>ts</strong>-12: (≥ 528px) Tablet Small Screen</div>
                    <div>grid-<strong>tl</strong>-12: (≥ 864p