body {
  font-family: Arial, Helvetica, sans-serif;
  background:#f4f4f4;
  margin:0;
}

.title {
  text-align:center;
  padding:20px;
  background:#333;
  color:white;
}

.grid {
  display:grid;
  grid-template-columns: repeat(auto-fit,minmax(300px,1fr));
  gap:20px;
  padding:20px;
}

.aisle {
  background:white;
  padding:15px;
  border-radius:10px;
  box-shadow:0 3px 10px rgba(0,0,0,.1);
}

table {
  width:100%;
  border-collapse: collapse;
}

th {
  background:#eee;
  padding:10px;
  text-align:left;
}

td {
  padding:8px;
  border-bottom:1px solid #ddd;
}

.highlight {
  background:#7CFC6A;
  font-weight:bold;
}

.qty {
  background:#fffbe6;
  cursor:text;
  min-width:40px;
}

.qty:focus {
  outline:2px solid #4CAF50;
  background:white;
}