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<!doctype html> <title>Example</title> <style> #grid { display: grid; grid-template-columns: 1fr 1fr 1fr; grid-gap: 1px; } #grid > div { background-color: orangered; color: white; font-size: 4vw; padding: 10px; } #grid > div:first-child { grid-row-start: 2; grid-row-end: span 2; background: limegreen; animation: myAnimation 1s ease 1s 5 alternate forwards; } @keyframes myAnimation { 100% { grid-row-end: span 3; } </style> <div id="grid"> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> <div>6</div> <div>7</div> <div>8</div> <div>9</div> </div>
