a.sm2_button {
 position:relative;
 display:inline-block;
 transition: all 0.2s ease-in-out;
}

a.sm2_button:focus {
 outline:none;
}

a.sm2_button,
a.sm2_button.sm2_paused:hover {
 background-color:#3399cc;
 background-repeat:no-repeat;
 background-position:5px 50%;
}

a.sm2_button:hover,
a.sm2_button.sm2_playing,
a.sm2_button.sm2_playing:hover {
 background-color:#cc3333;
}

/*a.sm2_button.sm2_playing,
a.sm2_button.sm2_playing:hover {
 transform:rotate(90deg);
}*/

a.sm2_button.sm2_paused,
a.sm2_button.sm2_paused:hover {
 background-color:#666;
}

a.sm2_button {
	position: fixed;
	bottom: 40px;
	left: 40px;
	z-index: 10;
    display: -webkit-inline-box;
    display: -webkit-inline-flex;
    display: -ms-inline-flexbox;
    display: inline-flex;
	-webkit-box-pack: center;
	-ms-flex-pack: center;
	justify-content: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
	width: 50px;
	height: 50px;
	color: #fff;
	background-color: #25D366;
	border-radius: 50%;
	font-size: 24px;
	text-align: center;
	text-decoration: none;
}

a.sm2_button .fa-play {
 display: inline-block;
}
a.sm2_button.sm2_playing .fa-play {
 display: none;
}
a.sm2_button .fa-pause {
 display: none;
}
a.sm2_button.sm2_playing .fa-pause {
 display: inline-block;
}