*{
    background-color: chocolate;
}

h1
{
    background-color: aquamarine;
    font-family: 'Crete Round', serif;
    text-align: center;
}

#sites
{  
    text-align: center; 
    font-family: 'Crete Round', serif;
}

#site1
{
    background-color: #934;
    background: url('Images_index/Icone_web.png') no-repeat top center;
}

#site2
{
    background-color: rgb(73, 126, 153);
    background: url('Images_index/Icone_web.png') no-repeat top center;
}

#site3
{
    background-color: #487;
    background: url('Images_index/Icone_web.png') no-repeat top center;
}

#site4
{
    background-color: #818436;
    background: url('Images_index/Icone_web.png') no-repeat top center;
}

#sites ul li
{
    width: 350px;
    float: left;
    padding-top: 140px;
    text-align: center;
    margin-right: 10px;
    border-radius: 25px;
    height: 200px;
}

li
{
    list-style-type: none;
}