body{
  background-image: url("../images/bg.jpg");
  background-size: cover;       
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  font-size: 22px;
  font-family: 'Segoe UI', 'Helvetica', 'Arial', sans-serif;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

.bottoni {
  display: grid;
  grid-template-columns: repeat(3, min(300px, 300px));
  grid-template-rows: auto;
  grid-template-areas:
    "d1 d3 d5"
    "d2 d4 d6"
    "d7 d9 d11"
    "d8 d10 d12"
    "d13 d15 d17"
    "d14 d16 d18";
  align-items: start;
  row-gap: 20px;
  column-gap: 20px;
  padding: 20px;
  justify-content: center;
}

.bottone {
  padding: 0;
  margin: 10px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.bottone img {
  display: block;
  width: 100%;
  height: auto;
  box-shadow: 0 0 10px rgba(0,0,0,0.5);
  border-radius: 10px;
}

.descrizione{
  margin-left: 10px;
  text-align: center;
}

@media screen and (max-width: 768px) {
  body {
    font-size: 18px;
  }
  
  .bottoni {
    grid-template-columns: 1fr;
    grid-template-areas: none;
    row-gap: 15px;
    padding: 10px;
  }
  
  .bottone {
    margin: 5px;
    grid-area: auto !important;
  }
  
  .descrizione {
    grid-area: auto !important;
  }
}