body{
    width:100%;
    font-size:100%;
    font-family: 'Source code pro', serif;
    margin: 0px;
    padding: 0px;
    background-color: rgb(243, 243, 243);
}
.en-haut{
    background-color: white;
}
a:hover{
    cursor:pointer;
}
p {
    text-align: justify;
}
nav {
    display:flex;
    align-items: center;
    padding: 0px;
    margin: 0px;
    margin-bottom:2px;
    box-shadow: grey 0px 2px 2px;
}
nav a{
    width: 20%;
    text-align:center;
    text-decoration: none;
    color:black;
    width: 100%;
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
    font-weight: bold;
    font-size: 200%;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}
.menu-retour:hover{
    background-color: rgb(176, 242, 182);
}
.menu-2nd:hover{
    background-color: rgb(169, 234, 254);
}
.menu-1ère:hover{
    background-color: rgb(255, 255, 107);
}
.menu-terminale:hover{
    background-color: rgb(254, 163, 71);
}
.menu-bac1:hover{
    background-color: rgb(255, 86, 86);
}
.menu-2nd .submenu li:hover{
    font-weight: bold;
}
.menu-1ère .submenu li:hover{
    font-weight: bold;
}
.menu-terminale .submenu li:hover{
    font-weight: bold;
}
.menu-bac1 .submenu li:hover{
    font-weight: bold;
}
.info{
    background-color: rgb(28, 177, 28);
    font-size: 150%;
    font-weight: bold;
    text-align: center;
    margin: 3px 0;
    margin-bottom:0;
    padding: 10px 0;
}
.warning{
    background-color: red;
    font-size: 150%;
    font-weight: bold;
    text-align: center;
    margin: 3px 0;
}
section{
    float:right;
    margin-right: 22%;
    width: 56%;
    font-size: 180%;
    box-shadow:1px 1px 4px grey;
    background-color:white;
}
.gauche{
    margin-top:3%;
    float:left;
    color: black;
    font-size:150%;
    box-shadow:1px 1px 4px grey;
    margin-left:3.5%;
    width:15%;
    font-family: monospace;
    border-radius:0.5rem;
    background-color:white;
}
h2{
    margin:0;
    padding:0;
    margin-bottom:1%;
    text-align: center;
    padding-top: 5%;
}
h1{
    margin:0;
    margin-bottom:1%;
    text-align: center;
    padding-top: 5%;
    font-size:200%;
    color: black;
}
.gauche a{
    color:black;
    text-decoration: none;
    font-size: 120%;
}
.gauche>div>ul>li>a{
    font-size:130%;
}
.gauche div ul{
    padding-left:5%;
    padding-top: 5%;
    padding-bottom: 5%;
    padding-right: 5% ;
    margin:0;
}
.gauche div>ul::after{
    content: "";
    display:block;
    clear: both;
}
.gauche>div li{
    list-style-type: none;
    padding-top: 1%;
    padding-bottom: 1%;
    transition:0.2s;
}
.gauche>div>ul>li>a{
    font-size:130%;
}
.gauche>div>ul>li{
    padding-top: 5%;
    padding-bottom: 5%;
    border-bottom: 1px solid black;
}
.submenu-coté{
    display:none
}
.gauche>div li:hover .submenu-coté{
    display: block;
    padding-left: 10%;
    padding-top: 1%;
    padding-bottom: 1%;
}
.menu-2nd-coté>a:hover{
    font-weight:bolder;
}
.menu-1ère-coté>a:hover{
    font-weight:bolder;
}
.menu-terminale-coté>a:hover{
    font-weight:bolder;
}
.menu-bac1-coté>a:hover{
    font-weight:bolder;
}
.menu-2nd-coté .submenu-coté li:hover{  
    font-weight: bold;
}
.menu-1ère-coté .submenu-coté li:hover{ 
    font-weight: bold;  
}
.menu-terminale-coté .submenu-coté li:hover{ 
    font-weight: bold;; 
}
.boutton{
    cursor: pointer;
}
.boutton:hover{
    transform: scale(1.03)
}
.boutton:active{
    transform: scale(0.98)
}
.icon-div{
    padding:0;
    margin:1% 0;;
    display:flex;
    justify-content:center;
}
.icon{
    width:2.5rem;
    height: 2.5rem;
    margin:0;
    padding:0;
}
#hidden{
    display:none;
}
.baniere-mobile{
    display:none;
}

@media only screen and (max-width: 1280px){
    body{
        background-color:white;
    }
    nav a{
        font-size: 170%;
    }
    a{
        font-size: 170%;
    }
    .gauche{
        display:block;
        margin: 0 0;
        width:100%;
        border-radius:0;
        background-color:#FAEA73;
        padding:0;
        box-shadow: none;
    }
    .gauche div ul{
        padding:1% 5%;
    }
    aside{
        font-size:140%;
    }
    section{
        display:block;
        width:80%;
        margin-left: 10%;
        margin-right: 10%;
        font-size:140%;
        box-shadow: none;
    }
    .info,.warning{
        font-size:140%;
    }
    header{
        font-size:100%;
    }
    .info{
        font-size:100%;
    }
    h1{
        font-size:195%;
        }
}
@media only screen and (max-width: 960px){
    nav a{
        font-size: 140%;
    }
    a{
        font-size: 140%;
    }
    aside{
        font-size:100%;
    }
    .info,.warning{
        font-size:120%;
    }
    section{
        display:block;
        width:80%;
        margin-left: 10%;
        margin-right: 10%;
        font-size:120%;
    }
    h1{
        font-size:180%;
        }
}
@media only screen and (max-width:550px){
    section,.info,.warning{
        font-size:100%;
        margin: 2% 0;
        width: 100%;
        box-shadow:none;
    }
    .info,.warning{
        margin: 3px 0;
    }
    .gauche{
        font-size:110%;
    }
    nav a {
        font-size: 100%;
        padding: 1rem 0;
    }
    a{
        font-size: 100%;
    }
    .menu-bac1, .menu-terminale{
        display:none;
    }
    #hidden{
        display:block;
    }
    h1{
    font-size:170%;
    }
}
@media only screen and (max-width:350px){
    section, .info,.warning{
        font-size:90%;
    }
    nav a {
        font-size: 90%;
        padding: 1rem 0;
    }
    a{
        font-size: 90%;
    }
    .gauche{
        font-size:90%;
    }
    .droite{
        font-size:90%;
    }
    .icon{
        width:1.7rem;
        height: 1.7rem;
    }
}
@media only screen and (orientation:portrait){
    .baniere-pc{
        display:none;
    }
    .baniere-mobile{
        display:block
    }
}