html,
body {

  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

.bm {
	
  width: 400px;
  height: 400px;
      position: absolute;
    float: left;
}
.nav{
	width:100%;
	height:200px;
	margin: 0 auto;
	padding: 20px;
}
.btn{
	margin:25px ;
	width:100px;
	height: 50px;
	border-radius: 10px;
	display:inline-block;
}
.minus{
	float:left;
	background-color:red;

}
.play{
	float:left;
	background-color:green;
}
.slider{
	width:100%;
}
.slide {
    -webkit-appearance: none;  /* Override default CSS styles */
    appearance: none;
    width: 100%; /* Full-width */
    height: 25px; /* Specified height */
    background: #d3d3d3; /* Grey background */
    outline: none; /* Remove outline */
    opacity: 0.7; /* Set transparency (for mouse-over effects on hover) */
    -webkit-transition: .2s; /* 0.2 seconds transition on hover */
    transition: opacity .2s;
}

#follower{
  width:100%;
  height:100%;
}