body { font-family: Arial, sans-serif; background:#111; color:#fff; margin:0; }
.tabs {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap:6px;
  padding:10px;
  background:#8b0000;
}

.tabs button {
  padding:10px;
  background:#c00;
  color:white;
  border:none;
  font-weight:bold;
}

.tabs button:hover { background:rgb(255, 242, 0); }
.tab-content { display:none; padding:15px; }
h2 {
  color:#ffcc00;
  margin-top:0; 
  text-align: center;
}

.section-header {
  margin: 20px auto 10px auto;
  padding: 8px 12px;
  background: #330000;
  border-left: none;
  border-top: 3px solid #ffcc00;
  border-bottom: 3px solid #ffcc00;
  text-align: center;
  font-weight: bold;
  width: 100%;
}

.section-line {
  margin:4px 0 4px 10px;
}