body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #e7f5ff;
}

a {
    text-decoration: none;
}

header {
    background-color: #52a5d9;
    color: #ffffff;
    padding: 10px 0;
    text-align: center;
    position: fixed;
    top: 0;
    width: 100%;
    height: 110px;
}

header a {
    color: #ffffff;
    font-size: 1em;
}

/* Navigation Bar */

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333333;
    width: 100%;
}

nav ul li {
    float: left;
    width: 20%;
}

nav ul li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
}

nav ul li a:hover {
    background-color: #3e7ca3;
}

/* Footer */

footer {
    background-color: #52a5d9;
    color: #ffffff;
    text-align: center;
    padding: 10px 0;
    width: 100%;
    bottom: 0;
}

/* Main Content */
main {
    padding: 20px;
    margin-top: 8em;
}

.box {
    border: 2px solid #52a5d9;
    padding: 15px;
    margin: 10px 0;
    background-color: #ffffff;
    scroll-margin-top: 140px;
}

.bleu {
    background-color: #52a5d9;
}

.gris {
    background-color: #9a9a9a;
}

.round {
    border-radius:8px;
}

.w100 {
    width:100%;
}
.w90 {
    width:90%;
}
.w75 {
    width:75%;
}
.w50 {
    width:50%;
}
.w25 {
    width:25%;
}
.w15 {
    width:15%;
}

.center {
    text-align: center;
}
.separator:before, .separator:after {
    content: " ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ ";
}

.mini-logo {
    height: 20px;
    width: 20px;
    padding-right: 10px;
    float: left;
}

.left {
    float: left;
}

.right {
    float: right;
}

.indice {
    font-size: 10px;
    margin: 0;
}