.boton-flotante{position:fixed;top:250px;right:20px;background-color:#fff;color:#000;padding:12px 18px;border-radius:0px;border:1px solid #000;z-index:9999;text-decoration:none;box-shadow:0 4px 10px rgba(0,0,0,.1);transition:background-color .3s ease,color .3s ease}.boton-flotante:hover{color:#fff;box-shadow:0 4px 12px rgba(0,0,0,.3)}