HTML/CSS/JS Playground

<div class="container">
  <div class="box box-1">1</div>
  <div class="box box-2">2</div>
  <div class="box box-3">3</div>
  <div class="box box-4">4</div>
  <div class="box box-5">5</div>
</div>

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: #0f0f0f; font-family: monospace; padding: 24px; }

.container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
}

.box {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
  border-radius: 8px;
  color: white;
  transition: transform 0.2s ease;
}

.box:hover { transform: scale(1.1); }
.box-1 { background: #6366f1; flex-grow: 1; }
.box-2 { background: #8b5cf6; }
.box-3 { background: #a855f7; flex-basis: 200px; }
.box-4 { background: #c084fc; }
.box-5 { background: #e879f9; flex-grow: 2; }

PREVIEW