/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f9fafa;
    color: #000000;
    padding: 1em;
}
button {
    background-color: #3c8ebd;
    color: #fff;
    border: none;
    font-size: 18px;
    padding: 10px;
    cursor: pointer;
}
.logo img {
    height: 70px;
}

nav ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav li {
    margin-right: 1em;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-size: 1.2em;
    padding: 0.5em;
}

/* Container */
.container {
    margin: 2em auto;
    max-width: 100%;
    height: auto    ;
    padding: 1em;
}

/* Footer */
footer {
    background-color: #3c8ebd;
    color: #fff;
    text-align: center;
    padding: 1em;
}

@media only screen and (max-width: 768px) {
    header {
        flex-direction: column;
    }

    nav ul {
        flex-direction: column;
        justify-content: center;
    }

    nav li {
        margin: 0.5em 0;
    }