body {
  margin: 0;
  font-family: Helvetica;
  overflow-x: hidden;
  -webkit-user-select: none;
  -webkit-text-size-adjust: none;
  -webkit-border-radius:3px;
}


.BotonGris{
    background-color:rgb(200,200,200);
}

.BotonGris:hover{
    background-color:rgb(150,150,150);
}