body {
    background-color: black;
    color: white;
    font-family: monospace;
    font-size: 16px;
  }
  
a:link {
    color: white;
  }

a:visited {
    color:white;
  }
  
.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
  }
  
.total_center {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

.relative_center {
    margin: 0;
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);  
  }
  
.container {
    text-align: center;
  }

img {
    height: auto;
    width: auto;
  }