body {
    margin: 0px;
}

a {
    text-decoration: none;
    color: white;
}

header {
    background-color: black;
    text-align: center;
    justify-content: center;
    padding: 20px;
}

nav {
    background-color: grey;
    text-align: center;
    font-size: 20px;
    padding: 20px;
}

.elementnav {
    padding-left: 20px;
    padding-right: 20px;
    font-family: "Titillium Web";
}

.elementnav:hover {
    background-color: black;
    margin: 20px;
    font-size: 110%;
}



.titreheader {
    color: white;
    margin: 0%;
    font-family: "Bebas Neue";
    font-size: 60px;
}

.imagelogo {
    margin: 10px;
}

footer {
    background-color: black;
    padding-top: 20px;
    padding-bottom: 40px;
}

#mainfooter {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 50px;
    margin-right: 70px;
}

#plansitefooter {
    text-align: center;
}

.textfooter {
    color: white;
    text-decoration: none;
}

#retourhaut {
    margin-top: 100px;
    text-align: center;
    padding: 10px 20px;
    border-radius: 5px;
    font-size: 30px;
    font-family: "Titillium Web";

}

#retourhaut:hover {


}

#textretour:hover {
    color: black;
    background-color: white;
    padding: 10px;
}










.bebas-neue-regular {
    font-family: "Bebas Neue", sans-serif;
    font-weight: 400;
    font-style: normal;
}

.titillium-web-bold {
    font-family: "Titillium Web", sans-serif;
    font-weight: 700;
    font-style: normal;
}

--------------------------------------------------------------------------------------------------

main {
    margin: 40px;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 8px;
}

#titreprincipal {
    font-size: 70px;
}

main section {
    margin: 50px;
    margin-left: 3%;
    margin-right: 3%;
    font-size: 20px;
}

#intro {
    font-family: 'Titillium Web', sans-serif;
    font-size: 25px;
}

main section h1 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 40px;
    color: #222;
    text-align: center;
    margin-top: 50px;
    margin-bottom: 25px;
}

#sources {
    background-color: gray;
}

main section article {
    margin-bottom: 60px;
    padding: 30px;
    background-color: #f0f0f0;
    border-radius: 8px;
    display: flex;
    align-items: start;
    flex-wrap: wrap;
}

main section article p {
    font-family: 'Titillium Web', sans-serif;
    font-size: 20px;
    color: #555;
    line-height: 1.5;
    text-align: justify;
    margin: 10px;
}

.photopresentation {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 15px auto;
    border-radius: 8px;
}

figcaption {
    font-size: 10px;
}

@media (max-width: 768px) {
    main {
        margin: 20px;
        padding: 15px;
    }

    main section h1 {
        font-size: 28px;
    }

    main section article h1 {
        font-size: 22px;
    }

    main section article p {
        font-size: 14px;
    }
}