* {
    margin: 0;
    padding: 0;
    border: none;
    font-family: Arial, sans-serif;
  }
  
  body {
    font-size: 14px;
    background: rgb(203,203,203);
    background: linear-gradient(90deg, rgba(203,203,203,1) 0%, rgba(246,246,246,1) 100%);
  }

  #mainContainer {
    position: relative;
    width: 100%;
    height: 100%;
  }
    #logo {
        position:absolute;
        left: calc(50% - 200px);
        top: 250px;
    }

    #logo > img {
        width: 400px;
    }

    h2 {
      font-size: 1.5em;
      text-align: center;
    }