h1 {text-align: center;}
p {text-align: center;}

body {
  margin: 0;
  background-image: url("back.png");
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: 100% 100%;
}

.image-container {
  display: inline-block;
}

.hover-image {
  width: 300px;
  cursor: pointer;
}

.tooltip {
  position: fixed;
  background-color: rgba(0, 0, 0, 0.85);
  color: white;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 1000;
}

.row {
  display: table;
  width: 100%;
  border-collapse: separate;
  border-spacing: 15px;;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  padding: 40px;
  margin: 0 auto;
}

.hover-image {
  width: 100%;
  max-width: 250px;
  margin: 0 auto; /* centres image inside its grid cell */
}