* { /* reset all default rules */
    margin: 0;
}

html, 
body { /* helps other styles to caculate their position on the page correctly */
    height: 100%;
}

body {
    font-family: Helvetica, Arial, sans-serif;
    /* background-color: #e4eef0; */
    background-color: #07262c;
}

header {
    display: block;
    top: 0;
    left: 0; /* so position at the very top left of the window */
    width: 100%;
    height: 150px;
    background-color: #333;
}

#img-header {
    display: block;
    margin-left: auto;
    margin-right: auto;
	max-width: 100%;
    height: auto;
}

nav {
    /* background-color: #f44336; */
    background-color: #1f9fff;
    /* color: #f0eee4; */
}

nav a:visited, /* when link has been visited */
nav a:link { /* default */
    color: #aee3f7;
    font-weight: bold;
    /* color: #e4eef0; */
    text-decoration: none; /* links without underline */
}

nav a:hover {
    color: #333;
    font-weight: bold;
}

table a:visited, /* when link has been visited */
table a:link { /* default */
    color: #333;
    font-weight: bold;
    /* color: #e4eef0; */
    text-decoration: none; /* links without underline */
}

table a:hover {
    color: #f44336;
}

/* #1f9fff
#0C97E2 */

nav > ul {
    top: 150px;
    /* background-color: #333; */
    display: inline;
    padding: 0;
}

nav > ul > li {
    display: inline-block;
    list-style: none;
    /* margin: .5em 1em .5em 1em; */
    margin: .5em 1em .5em 1em;
}

main {
    display: block;
    padding-top: 3em;
    padding-bottom: 3em;
    min-height: 85%;
}

footer {
    text-align: center;
    background-color: #333;
}

.pfooter {
    color: #e4eef0;
    padding: 1em 5px 1em 5px;
    font-style: italic;
}

article {
    padding: 2em; /* proportinal value */
}


/* à garder pour la page 3d */
/* table {
    border-collapse: collapse;
    border: 2px solid #f19892;
}

td, th {
    border: 1px solid #f19892;
    padding: 10px 20px;
}

th {
    background-color: #cfc8c8;
} */