body {
    background-attachment: scroll;
    background-image: url(https://i.servimg.com/u/f19/16/24/80/71/fond10.png);
}

#page {
    background-color: #c4bba7;
    width: 80%;
    margin: auto;
    padding-bottom: 10px;
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 80px;
}

h1 {
    text-align: center;
}

ul.menu {
    font-weight: 700;
    padding:0;
    margin:auto;
    width: 458px;
    list-style-type:none;
}

ul.menu li {
    margin-left: 2px;
}

ul.menu li a {
    display:block;
    float:left;   
    width:100px;
    background-color:#6495ED;
    color:black;
    text-decoration:none;
    text-align:center;
    padding:5px;
    border:2px solid;
}

ul.menu li a:hover {
    background-color:#D3D3D3;
    border-color:#696969 #DCDCDC #DCDCDC #696969;
} 

.contenu_aide {
    display: block;
    margin: auto;
}

ul.contacts {
    border-style: solid;
    border-width: 1px;
    padding-left: 0px;
    width: 10em;
    margin-left: 30px;
    list-style-type: none;
}

ul.logs {
    border-style: solid;
    border-width: 1px;
    padding-left: 0px;
    width: 95%;
    margin: auto;
    list-style-type: none;
    text-align: center;
}

ul.logs li {
    margin-bottom: 16px;    
}

.date_log {
    margin: 0px;
    font-style: italic;
}

.desc_log {
    margin: 0px;
}