.sondaggi-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;margin:20px 10px}
.sondaggio{flex:1 1 300px;max-width:500px;text-align:center;box-sizing:border-box;padding:12px}
.sondaggio svg{display:block;width:min(100%,280px);height:auto;margin:12px auto}
.sondaggio-legenda{list-style:none;padding:0;display:inline-block;text-align:left}
.sondaggio-legenda li{margin:5px 0}.sondaggio-legenda span{display:inline-block;width:12px;height:12px;margin-right:8px}