.float{
	position:fixed;
	width:60px;
	height:60px;
	bottom: 15px;
    left: 16px;
	background-color:#4cc370;
	color:#FFF;
	border-radius:50px;
	text-align:center;
    font-size:30px;
	box-shadow: 2px 2px 3px #999;
    /* CAMBIO CLAVE: Usa un z-index muy alto */
    z-index: 9999; 
}
.float:hover {
	text-decoration: none;
	color: #fff;
    background-color:#3d9e5a;
}

.my-float{
	margin-top:16px;
}