/* Logo Soi, Nature et Énergie en filigrane */
body::before{
    content:"";
    position:fixed;
    z-index:-1;
    width:min(720px,72vw);
    aspect-ratio:1/1;
    left:50%;
    top:54%;
    transform:translate(-50%,-50%);
    background:url("logo-soi-nature-energie.png") center/contain no-repeat;
    opacity:.055;
    pointer-events:none;
}
body{
    position:relative;
    isolation:isolate;
}
.site-head,.site-foot{
    position:relative;
    z-index:1;
}
.wrap{
    position:relative;
    z-index:1;
}
@media(max-width:700px){
    body::before{
        width:92vw;
        top:50%;
        opacity:.04;
    }
}