body {
    font-family:"Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color:rgb(255, 255, 255);
    text-align:center;
    background-color:rgb(0,0,0);
    margin-left: 0;
    margin-right: 0;
  }   

em {
    font-style: italic;
  }

h1 {
    display: block;
    font-size: 4em;
    margin-top: 2em;
    font-weight: bold;
  }

h4 {
    display: block;
    font-size: 2em;
    margin-top: 1em;
    font-weight: bold;
  }

.mail {
    font-size:30px;
    margin-top: 2em;
    width:36px;
    height:36px;
    line-height:36px;
    display:inline-block;
    text-align:center;
    border-radius:50%;
    background-color:rgb(255, 255, 255);
  }