body {
    background-color: #001f3f;
    color: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

header, footer {
    background-color: #0074D9;
    color: #FFFFFF;
    padding: 20px;
    text-align: center;
}

a {
    color: #FF4136;
}

.container {
    width: 80%;
    margin: 0 auto;
}

button {
    background-color: #2ECC40;
    color: #FFFFFF;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background-color: #01FF70;
}

nav {
    display: flex;
    justify-content: space-around;
    background-color: #001f3f;
    padding: 10px;
}

nav a {
    color: #FF851B;
    text-decoration: none;
    font-weight: bold;
}