body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    text-align: center;
}

header {
    background: linear-gradient(90deg, #004aad, #0077ff);
    color: white;
    padding: 35px 15px;
}

header h1 {
    margin: 0;
    font-size: 2em;
}

nav {
    background-color: #003080;
    padding: 10px 0;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}

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

section {
    max-width: 800px;
    margin: auto;
    padding: 30px 15px;
}

.box {
    background: white;
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.box a {
    display: inline-block;
    margin-top: 15px;
    padding: 14px 25px;
    background-color: #004aad;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1.1em;
}

.box a:hover {
    background-color: #003080;
}

/* Mobile */
@media (max-width: 700px) {
    header h1 {
        font-size: 1.6em;
    }
    nav a {
        display: block;
        margin: 15px 0;
        font-size: 1.1em;

    }
    .box a {
        width: 80%;
        padding: 12px;
        font-size: 1em;
    }

    section {
    font-size: 1.1em;
    }
}