* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

nav {
    background-color: lightblue;
    padding: 10px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

a {
    text-decoration: none;
    color: black;
    font-weight: bold;
}

header {
    margin-bottom: 20px;
}

section {
    margin-bottom: 30px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
    width: 100%;
}

footer {
    padding: 10px;
}


main {
    padding: 8px;
}

.container-flex-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    flex-direction: row;
}

.service {
    flex: 1;
    min-width: 200px;
    border: 2px solid black;
    padding: 20px;
}

.dark-mode {
    background-color: #333;
    color: white;
}

.dark-mode nav {
    background-color: #555;
}

.dark-mode input, .dark-mode textarea {
    background-color: #555;
    color: white;
    border: 1px solid #777;
}

@media (max-width: 600px) {
    .container-flex-row {
        flex-direction: column;
    }

    nav {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
}