.conteneur {
    width: 830px;
    margin-left:auto;
    margin-right: auto;
}

header {
    width: 800px;
    height: 150px;
    background: #093844;
    margin-left:auto;
    margin-right: auto;
}

.boutons{
    display:flex;
    margin: 15px 0px 15px 0px;
}

nav {
    width: 166px;
    height: 39px;
}

.jaune1 {
    background: #f9f89b;
}

.jaune2 {
    background: #f1f084;
}

.jaune3 {
    background: #e6e573;
}

.jaune4 {
    background: #dedd5e;
}

.jaune5 {
    background: #d2d155;
}

.vert {
    display: flex;
    width: 880px;
}

article {
    width: 550px;
    height: 500px;
    background: #80a894;
    margin: 0px 30px 0px 0px;
}

aside {
    width: 250px;
    height: 500px;
    background: #52736b;
}

footer {
    width: 700px;
    height: 100px;
    background: #532736;
    margin-left:auto;
    margin-right: auto;
    margin-top: 15px;
}