body{
  font-family: Arial, sans-serif;
  background:#0f172a;
  color:#fff;
  text-align:center;
}
.hidden{display:none}
#quiz-container{max-width:700px;margin:auto;padding:20px}
button{padding:10px 20px;margin:10px;border:none;border-radius:10px;cursor:pointer}
button:hover{opacity:0.9}
.correct{background:#16a34a}
.wrong{background:#dc2626}
#question-image{width:100%;max-height:300px;object-fit:contain;margin:10px 0;border-radius:10px}