* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
  }
  body {
    background-color: #4249ed;
  }
  #toggle-btn,
  .menu a {
    position: absolute;
    display: grid;
    place-items: center;
    border-radius: 50%;
  }
  .menu a {
    background-color: #ffffff;
    height: 70px;
    width: 70px;
    font-size: 22px;
    color: #4249ed;
    text-decoration: none;
    top: 30px;
    left: 30px;
    transition: 0.5s;
  }
  #toggle-btn {
    background-color: #0f1730;
    color: #ffffff;
    height: 100px;
    width: 100px;
    border: none;
    font-size: 40px;
    top: 15px;
    left: 15px;
    transition: 0.3s;
    cursor: pointer;
  }
  .active {
    transform: rotate(45deg);
  }