body {
    font-family: Arial, sans-serif;
    background: #f4f7fa;
    margin: 0;
    padding: 0;
}

/* Header */
/* Header */
header {
    background: #2b6cb0;
    color: #fff;
    padding: 16px;
    text-align: center;
}
header h1 {
    margin: 0;
    font-size: 1.8em;
}
header nav {
    margin-top: 10px;
}
header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;              /* makes items horizontal */
    justify-content: center;    /* centers the items */
    gap: 25px;                  /* space between items */
}
header nav ul li {
    display: inline;            /* ensures horizontal layout */
}
header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1em;
    font-weight: bold;
}
header nav ul li a:hover {
    text-decoration: underline;
}


/* Container */
.container {
    max-width: 800px;
    margin: 40px auto;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 10px;
}
p {
    font-size: 1.05em;
    line-height: 1.6;
    color: #444;
    margin-bottom: 20px;
}
ul {
    margin-left: 20px;
    margin-bottom: 20px;
    color: #444;
}

/* Button */
.start-btn {
    display: block;
    width: 100%;
    padding: 15px;
    font-size: 1.2em;
    text-align: center;
    background: #0077cc;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
    text-decoration: none;
}
.start-btn:hover {
    background: #005fa3;
}

/* Footer */
footer {
    background: #222;
    color: #ccc;
    padding: 15px;
    text-align: center;
    margin-top: 40px;
    font-size: 0.9em;
}