body {
    min-height: 100vh;
    margin: 0;
    display: grid;
    grid-template-rows: auto 1fr auto;
    background-color: black;
    color: white;
    background-image: url("https://www.angelfire.lycos.com/doc/images/bg/redbrick.gif");
  }

#content {
    margin-left: 32px;
}
  
#startButton {
    background-color: black;
    color:blue;
    margin-left: 0;
}
  header {
    min-height: 50px;
    padding-bottom: 16px;
  }
  
  footer {
    min-height: 20px;
    padding-left: 16px;
  }