* {
    padding: 0px;
    margin: 0px;
}

html, body {
    background: white;
    text-align: justify;
}

/* CONTENT */

#content {
    margin: 15px;
}
#content h1 {
    font-weight : bold;
    color : black;
    border-bottom : medium solid orange ;
    /* width : 85%; */
    margin-bottom: 20px;
    margin-top : 20px;
    font-size : 15pt;
}

#content h2 {
    font-weight : bold;
    color : black;
    /* width : 85%; */
    border-bottom : thin solid orange ;
    margin-bottom: 10px;
    margin-top : 20px;
    font-size : 13pt;
}

#content h3 {
    font-weight : bold;
    color : black;
    /* width: 85%; */
    border-bottom : thin dashed orange ;
    margin-bottom: 10px;
    margin-top : 20px;
    font-size : 12pt;
}

#content a {
    color : grey;
    text-decoration : none;
    font-weight : bold;
}

#content a:hover {
    color : orange;
}

/* HEADER */

#header {
    background-color: grey;
    padding: 0px;
    margin: 0px;
}

#header h1 {
    color: white;
    padding : 7px;
    padding-left: 15px;
    text-align: center;
}

/* MENU */

#menu {
    background-color: grey;
    margin: auto;
    color: white;
    border-bottom : medium solid orange;
}

#menu a {
    color: white;
    text-decoration: none;
}

#menu ul {
    padding-left:0;    
    margin: auto;
    display: flex;
    flex-wrap: wrap;
    background-color: grey;
}

#menu ul li  {
    background-color: grey;
    color: white;
    padding: 5px;
    border: none;
    cursor: pointer;
    text-align: center;
    display: inline-block;
    position: relative;
    margin: auto;
}

#menu li {
    margin: 0;
}

#menu ul ul {
    display: inline-block;
    list-style-type: none;
    margin-top: 5px;
    padding: 0;
}

#menu ul ul li {
    display: block;
}

#menu ul ul {
    display: none;
    position: absolute;
    z-index: 1;
    left: 0;
}

#menu ul li ul li {
    display: block;
}

#menu ul li:hover {
    background-color: orange;
} 

#menu ul li:hover ul {
    display: block;
}

#menu {
    text-align: center;
}
#menu a {
    color: white;
}


#footer {
    color: white;
    background: grey;
    padding: 10px;
    text-align: center;
    border-top: 2px orange solid;
}

#footer a {
    font-weight: bold;
    color: orange;
}

/* OTHER */

.hidden {
    display: none;
}
.hidden:target {
    display: block;
}

#intro img {
    display: block;
    width: 100px;
    max-width: 100px;
    margin: 10px;
}

#intro .caption {
    display:none;
}

#intro {
    display: flex;    
    align-items: center;
}

ul{
    padding: 0px;
    padding-left:15px;
    margin: 10px;
    /* width: 85%; */
}

li{
    margin-right: 30px;
}

p {
    /* width: 85%; */
}

.correction a {
    color: green;
}

.correction a:hover {
    color: orange;
}