html, body {
    max-width: 100%;
    overflow-x: hidden;
    color: rgb(60,60,60);
}

a {
    text-decoration: none;
    color: rgb(80,100,220);
}
a:hover {color: red;}

ul {
    list-style-type: none; 
    margin: 0;
    padding: 0;
}

html {
    font-size: 1.1em;
}

body {
    max-width: 100vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-bottom: 3em;
}

#main-content-centered {
    max-width: 1000px;
    margin: auto;
    width: 70%;
    margin-top: 15px;
    padding: 10px;
    padding-left: 30px;
    padding-right: 30px;
}

h1,h2{
    font-variant: small-caps;
}

h1 {
    color: rgb(100,100,200);
    font-size: 150%;
    margin-bottom: 0.2em;
}
h2 {
    color: rgb(110,130,255);
}

.justify {
    text-align: justify;
}

a.selectable-shadow:hover img {
    filter: drop-shadow(3px 3px 3px);
    color: gray;
}

.page-head-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo-ipp {
    width: 275px;
    vertical-align: middle;
    margin-right: 20px;
    padding-right: 40px;
    border-right: 1px solid rgb(150,150,150);
}
.logo-polytechnique {
    width: 88px;
    vertical-align: middle;
}


.dr-navigation {
    font-weight: bold;
    font-size: 110%;
    font-variant: small-caps;
    color: rgb(120,120,120);
    margin-left: 8px;
}




  
  
nav a {
    display: inline-block;
    color: rgb(80,100,240);
    font-weight: bold;
    border: 2px solid gray;
    background-color: rgb(248,248,248);
    padding: 8px;
    border-radius: 8px;
    margin: 5px;
}

nav a:hover{
    background-color: rgb(255,255,240);
}





@media (max-width:1150px)
{
    .page-head-container {
        flex-direction: column-reverse;
        align-items: flex-start;
    }
    .header-logo {
        display: flex;
        margin-left: auto;
    } 

}

@media (max-width:600px)
{
    .header-logo img {
        flex-shrink: 1;
        max-width: 100%;
    } 
    .page-head-container {
        align-items: center;
    }
    #main-content-centered {
        width: 90%;
        margin: auto;
        margin-top: 15px;
    }
    .navigation {
        text-align: center;
        width: 100%;
    }
    .dr-navigation {
        display: inline-block;
    }
    nav a {
        width: 90%;
        margin: 0;
        padding: 10px;
        margin-bottom: 0.5em;
    }
    body {
        width: 100%;
        margin: 0;
        padding: 0;
    }
    html {
        margin: 0;
        padding: 0;
    }
}