body {
    margin: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

body,
ul,
li {
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Menu section */
header {
    margin: 0 auto;
    margin-bottom: 20px;
    background-color: #192a56;
    color: #fff;
}

nav ul {
    display: flex;
    justify-content: center;
    padding: 5px;
}

nav li {
    margin: 0 10px;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
}

nav a:hover {
    color: #fff;
    text-decoration: none;
}

/* Body section */
.main-section {
    width: 90%;
    margin: 0 auto;
    background-color: #fff;
    text-align: center;
    box-shadow: 0px 5px 5px rgba(0, 0, 0, 0.5);
    margin-bottom: 50px;
}

h2 {
    font-size: 5rem;
    margin-bottom: 20px;
    padding: 20px;
}


footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    font-size: 14px;
    z-index: 2;
}

@media (max-width: 900px) {
    h2 {
        font-size: 3rem;
    }
}