<main>
    <div class="frame"></div>
    <div class="red_squares">
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
      <div class="red_square"></div>
    </div>
    <div class="white_boxes">
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
      <div class="white_box"></div>
    </div>
    <div class="purple_boxes">
      <div class="purple_box"></div>
      <div class="purple_box"></div>
      <div class="purple_box"></div>
    </div>
    <div class="red_squares2">
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
      <div class="red_square2"></div>
    </div>
  </main>
index.html
* {
    box-sizing: border-box;
    transition: 0.5s ease;
  }
  body {
    height: 100vh;
    width 100vw;
    margin: 0;
    background-color: #d9ead3;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
  }
  main {
    display: flex;
    position: absolute;
    justify-content: center;
    align-items: center;
    height: 90vh;
    width: 90vw;
  }
  div {
  }
  .frame {
    position: absolute;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
    border: 0.15rem solid black;
  }
  .red_squares {
    height: 98%;
    width: 98%;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.5rem;
    padding: 0.5rem;
  }
  .red_square {
    background-color: #990000;
    opacity: 0.5;
    border: 0;
    border-radius: 5rem;
  }
  .red_squares2 {
    position: absolute;
    justify-content: center;
    height: 98%;
    width: 98%;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.5rem;
    padding: 0.5rem;
  }
  .red_square2 {
    background-color: transparent;
    opacity: 0.5;
    border: 0;
    border-radius: 5rem;
  }
  .red_square2:hover {
    background-color: #990000;
  }
  .white_boxes {
    position: absolute;
    justify-content: center;
    align-items: center;
    opacity: 0.8;
    height: 98%;
    width: 98%;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr 1fr ;
    padding: 0.5rem;
    gap: 0.1rem;
  }
  .white_box {
    height: 100%;
    border: 0.5rem solid white;
    border-radius: 5rem;
  }
  .purple_boxes {
    position: absolute;
    justify-content: center;
    align-items: center;
    opacity: 0.8;
    height: 98%;
    width: 98%;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 0.5rem;
    gap: 0.1rem;
  }
  .purple_box {
    margin-top: 20%;
    margin-bottom: 20%;
    margin-left: 40%;
    margin-right: 40%;
    height: 100%;
    border: 0.15rem solid black;
    border-radius: 10rem;
  }
index.css