body {
    background-color: #2E3440;
    font-family: roboto mono; 
  }
h1 {
    color: #ECEFF4;
    font-style: bold;
  }
  
h2 {
    color: #88C0D0;
  }
  
h3 {
    color: #A3BE8C;
  }
  
.background {
    width: 80%;
    background-color: #3B4252;
    margin-left: auto;
    margin-right: auto;
    padding: 20px;
  }
  
footer {
    text-align: center;
  }