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

body {
    background-color: #f2f4f7;
    font-family: Calibri, sans-serif;
    color: #222;
}

header {
    background-color: #003366;
    color: white;
    padding: 20px;
    text-align: center;
    box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 40px;
    margin: 0;
    letter-spacing: 1px;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    background-color: #0055a5;
    color: white;
    width: 200px;
    height: 100%;
    padding: 20px;
    font-family: Calibri, serif;
    font-size: 18px;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav li {
    margin-bottom: 10px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s, padding-left 0.3s;
}

nav a:hover {
    text-decoration: underline;
    color: #f2f4f7;
    padding-left: 10px;
}

.container {
    margin-left: 220px;
    padding: 40px;
    background-color: white;
    min-height: 600px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #003366;
    color: white;
    margin-top: 30px;
    box-shadow: 0px -2px 10px rgba(0, 0, 0, 0.1);
}

footer a {
    color: #e0e0e0;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}