body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100vh - 70px); /* Subtract the navbar height */
    margin: 0;
    background-color: #2c3e50; /* Night background color */
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 10px 0;
    background-color: #0073e6;
    border-bottom: 2px solid #005bb5;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar button {
    margin: 0 10px;
    padding: 10px 20px;
    font-size: 1em;
    color: #fff;
    background-color: #005bb5;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.navbar button:hover {
    background-color: #004090;
}

#h1 {
    color: #fff;
    font-size: 2em;
    margin-bottom: 20px;
}

.container {
    text-align: center;
}

#secret-key {
    font-size: 1.5em;
    cursor: pointer;
    color: #0073e6;
}

#copy-message {
    color: green;
    font-size: 0.9em;
}

#example-use {
    font-size: 0.9em;
    margin-top: 20px;
}

a {
    color: #0073e6;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

a:visited {
    color: #0073e6;
}