* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    color: white
  }
  
  body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .bg {
    position: absolute;
    width: 100vw;
    height: 100vh;
    background-color: black;
    background-image: black;
    z-index: -1;
    transition: 850ms;
  }
  
  .btn {
    width: 160px;
    height: 50px;
    position: relative;
    -webkit-tap-highlight-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 25px;
    color: #fff;
    cursor: pointer;
  }

  .btn:hover .bg {
    filter: invert(100%) brightness(80%);
  }

  .text {
    text-align: center;
    position: relative;
    width: 800px;
    color: aliceblue;
  }

  .box {
    text-align: center;
    position: absolute;
    color: white;
    background-color: black;
    left: 400px;
  }