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

header {
    background-color: #003366;
    color: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

header nav {
    display: flex;
    justify-content: center;
    align-items: center;
}

header nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
}

header nav ul li {
    margin: 0 15px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.2rem; /* Increased font size for header links */
    transition: color 0.3s;
}

header nav ul li a:hover {
    color: #cce5ff;
}

.pdf {
    width: 100%;
    aspect-ratio: 4 / 3;
    padding: 10px;
}

.sheets {
    width: 100%;
    aspect-ratio: 4 / 3;
    padding: 10px;
}

.title {
    text-align: center;
    margin-top: 20px;
    color: #4682B4;
}

.embed-container {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 20px;
    margin-top: 20px;
}

.embed-container iframe {
    border: none;
    flex: 1;
    max-width: 50%; 
    padding: 10px;
    border-radius: 15px; 
    overflow: hidden
}

body {
  background-image: url("pic/Jelly.gif");
  background-color: #cccccc;
  background-size: cover; /* Scales the image to cover the entire background */
  background-repeat: no-repeat; /* Prevents the image from repeating */
  background-position: center center; /* Centers the image in the viewport */
}