body{
    margin: 0px;
    padding: 2px;
    width: 800px;
    /*height: 480px;*/
}

header {
    width: 100%;
    height: 100px;
    position:fixed;
    top: 0px;
}
header div{
    display: inline-block;
    width: 300px;
    background-color: aquamarine;
}

header h1{
    margin: 0px;
    padding: 2px 2px 0px 0px;
}

header p{
    margin: 0px;
}

header nav{
    width: 480px;
    height: 100px;
    /*background-color: rgb(164, 191, 182);*/
    display: inline-block;
    vertical-align: top; /*permet d'aligner les bloc sur le haut*/
}

header nav ul{
    list-style: none;
    margin: 0px;
    padding: 0px;
}

header nav ul li{
    display: inline-block;
    vertical-align: middle;
    width: 150px;
    height: 100px;
    /*line-height: 100px;*/
    border: 1px solid red;
    text-align: center;
    margin: 0px 2px 0px 2px;
}

section{
    min-height: 450px;
    max-height: 450px;
    padding-top: 100px;
    padding-bottom: 20px;
}

footer{
    position:fixed;
    bottom: 0px;
    width: 100%;
    margin: 0px auto 0px auto;
}

footer p{
    width:35%;
    margin: 0px auto 0px auto;
}

.lesmesures{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
}

.mesure{
    width: 100px;
    padding: 2px;
    background-color: brown;
}