body, html, main {
    min-width: 100vw;
    min-height: 100vh;
    overflow: hidden;
  }

  header {
    text-align: center;
    color: blue;
    font-size: 32pt;
    position: fixed;
    left: 0;
    right: 0;
    top: 20%;
    font-weight: bold;
  }

  .bgimg {
    background-image: url('../img/usmc.jpg');
    min-height: 100%;
    width: 100%;
    background-position: center;
    background-size: cover;
    color: transparent;
    font-family: "Courier New", Courier, monospace;
    font-size: 24px;
    position: absolute;
    top: 0;
    left: 0;
    margin: 0;
  }
  
  #countdown {
    position: absolute;
    top: 69%;
    left: 0;
    right: 0;
    text-align: center;
    font-weight: bold;
    color: red;
    font-size: 32pt;
  }

  footer {
    text-align: center;
    color: whitesmoke;
    font-size: 12px;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 12px;
    font-weight: bold;
  }