{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #000;             
  background-color: #e0f7ff;
  padding: 0 20px;
}


header {
  background-color: #000;  
  color: #e0f7ff;         
  padding: 20px 0;
  text-align: center;
}

nav {
  margin-top: 10px;
}

nav a {
  color: #e0f7ff;
  text-decoration: none;
  margin: 0 15px;
  font-weight: bold;
  transition: color 0.3s;
}

nav a:hover {
  color: #80dfff;          
}


main {
  max-width: 1200px;
  margin: 20px auto;
}


.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.img-box {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #cceeff;  
  border-radius: 8px;
}

.img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s, filter 0.3s;
}

.img-box img:hover {
  transform: scale(1.05);
  filter: brightness(1.1);
}


button {
  background-color: #000;   
  color: #e0f7ff;          
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
  transition: all 0.3s;
}

button:hover {
  background-color: #80dfff;
  color: #000;                
}


footer {
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
  border-top: 1px solid #80dfff;
  font-size: 0.9rem;
  color: #000;
  background-color: #e0f7ff;
}


@media (max-width: 768px) {
  nav a {
    display: block;
    margin: 10px 0;
  }
}

@media (max-width: 480px) {
  body {
    padding: 0 10px;
  }
}