.reims-whatsapp-float {
 position: fixed;
 right: max(1rem, env(safe-area-inset-right));
 bottom: max(1rem, env(safe-area-inset-bottom));
 z-index: 40;
 display: grid;
 place-items: center;
 width: 3.5rem;
 height: 3.5rem;
 border-radius: 50%;
 background: #12804b url('/assets/reims-whatsapp.svg') center / 1.8rem no-repeat;
 color: transparent;
 font-size: 0;
 box-shadow: 0 4px 16px #0004;
}
.reims-whatsapp-float:focus-visible { outline: 3px solid #174880; outline-offset: 3px; }