body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #396a34;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1em 0;
    text-align: center;
}

nav ul.menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    background-color: #444;
}

nav ul.menu li {
    margin: 0 1em;
}

nav ul.menu li a {
    color: #fff;
    text-decoration: none;
    padding: 1em;
    display: inline-block;
    transition: background-color 0.3s;
}

nav ul.menu li a:hover {
    background-color: #555;
    border-radius: 5px;
}

.banner {
    background-color: #e8491d;
    color: #fff;
    text-align: center;
    padding: 1em 0;
}

.devis-btn {
    background-color: #333;
    color: #fff;
    padding: 1em 2em;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.devis-btn:hover {
    background-color: #555;
}

.main-photo img {
    width: 100%;
    height: auto;
    display: block;
}

.introduction, .our-expertise, .services-overview {
    padding: 2em;
    background-color: #fff;
    margin: 1em 0;
    border-radius: 5px;
}

.column {
    flex: 1 1 22%; /* Make sure columns are 22% of the width with space around */
    padding: 1em;
    box-sizing: border-box;
    margin: 1em 1%;
    background-color: #f4f4f4;
    border-radius: 5px;
}

h2 {
    color: #e8491d;
    text-align: center;
}

h3 {
    color: #333;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1em 0;
    margin-top: 2em;
}

footer a {
    color: #fff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}