body {
    background-image: url(paysage.jpg);
    background-size: cover;

}

a {
    text-decoration: none;
}

#titre {
    color: black;
    font-family: Arial, Helvetica, sans-serif;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), -2px -2px 4px rgba(255, 255, 255, 0.5);
    font-size: 50pt;
    text-align: center;
    margin-top: 8%;
}

#containerHub {

    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 10%;
    margin-left: 35%;
    margin-right: 35%;
}


#SW {
    display: grid;
    text-align: center;
    align-items: center;
    border-radius: 50px;
    background-color: black;
    border-color: white;
    color: White;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 25pt;
    border-style: double;
    width: 200px;
    height: 200px;
    transition: width 10s, height 10s, background-color 10s;
}

#site307 {
    display: grid;
    text-align: center;
    align-items: center;
    border-radius: 50px;
    border-style: double;
    color: White;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 30pt;
    background-color: crimson;
    width: 200px;
    height: 200px;
    transition: width 10s, height 10s, background-color 10s;
}
#projet {
    display: grid;
    text-align: center;
    align-items: center;
    border-radius: 50px;
    border-style: double;
    color: White;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 30pt;
    background-color: orange;
    width: 200px;
    height: 200px;
    transition: width 10s, height 10s, background-color 10s;
}