body {
    background-color: rgb(248, 196, 204);
}

main {
    background-color: white;
    margin-left: 100px;
    margin-right: 100px;

}

/*Navigation*/
nav {
    display: inline-block;
    width: 100%;
    text-align: left;
    background-color: black;
}

nav ul {
    list-style-type: none;
}

nav li {
    display: inline-block;
    margin-right: 15px;
}

nav a {
    font-size: 1.3em;
    font-family: Arial, Helvetica, sans-serif;
    color: rgb(163, 162, 162);
    padding-bottom: 3px;
    text-decoration: none;
}

#titre_principal {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    color: violet;
    font-size: 4.5rem;
    text-align: center;
    box-shadow: rgb(206, 105, 105);
    text-shadow: 3px 3px 6px black;
}

h1 {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    color: violet;
    font-size: 4.5rem;
    text-align: center;
    box-shadow: rgb(206, 105, 105);
    text-shadow: 3px 3px 6px black;
}

h2 {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    color: black;
    font-size: 2.3rem;
    text-align: center;
}

h3 {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    color: yellow;
    font-size: 1.9rem;
    text-align: center;
}

p {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    color: black;
    font-size: 1rem;
    text-align: justify;
    margin-left: 20px;
}


article {
    padding: 40px;
    background-color: rgba(58, 173, 240, 0.797);
    width: 65%;
    max-width: 70%;
    border-radius: 3px;
    border: 1px solid navy;
    text-align: center;
    margin-left: auto;
    margin-right: auto;

}

.mainmenubtn {
    background-color: skyblue;
    color: white;
    border: none;
    cursor: pointer;
    padding: 20px;
    margin-top: 20px;
}

.mainmenubtn:hover {
    background-color: blue;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-child {
    display: none;
    background-color: skyblue;
    min-width: 200px;
}

.dropdown-child a {
    color: blue;
    padding: 12px;
    text-decoration: none;
    display: block;
}

.dropdown:hover .dropdown-child {
    display: block;
}

img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 90%;
}