.class1 {
    background-image: url(../img/background1.png);
}
.class2 {
    background-image: url(../img/background2.jpg);
}
.container {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    overflow: auto;      
    display: grid; 
    grid-template-columns: 0.8fr 1.4fr 0.8fr; 
    grid-template-rows: 1.1fr 0.9fr 0.5fr 2fr; 
    gap: 0px 0px; 
    grid-template-areas: 
      ". . ."
      ". master-title ."
      ". sub-title ."
      ". . ."; 
}
.master-title { 
      grid-area: master-title; 
}
.sub-title { 
      grid-area: sub-title; 
}
h1 {
    text-align: center;
    color: white;
    font-size: 140px;
    font-family: 'Roboto Mono', monospace;
}
h2 {
    text-align: center;
    color: white;
    font-size: 60px;
    font-family: 'Roboto Mono', monospace;
}
h1:hover, h2:hover {
    cursor: default;
}
.unselectable {
    -webkit-user-select: none;
    -webkit-touch-callout: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
  }