$centersize: 80px;
$center1size: 205px;
$bezelsize: 240px;

%base {
  border-radius: 100%;
}
%rivet {
  position: absolute;
  height: 8px;
  width: 8px;
  background-color: #555;
  border-radius: 100%;
  box-shadow: inset 0 0 3px #000, 0 0 2px #000;
}

#beat-speaker-center-inner {
  @extend %base;
  height: $centersize;
  width: $centersize;
  position: absolute;
  bottom: 47px;
  right: 47px;
  -webkit-filter: blur(1px);
  filter: blur(1px);
  background: rgb(0,0,0);
  background: -moz-radial-gradient(center, ellipse cover, rgba(0,0,0,1) 0%, rgba(79,79,79,1) 0%, rgba(0,0,0,1) 100%);
  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(0,0,0,1)), color-stop(0%,rgba(79,79,79,1)), color-stop(100%,rgba(0,0,0,1)));
  background: -webkit-radial-gradient(center, ellipse cover, rgba(0,0,0,1) 0%,rgba(79,79,79,1) 0%,rgba(0,0,0,1) 100%);
  background: -o-radial-gradient(center, ellipse cover, rgba(0,0,0,1) 0%,rgba(79,79,79,1) 0%,rgba(0,0,0,1) 100%);
  background: -ms-radial-gradient(center, ellipse cover, rgba(0,0,0,1) 0%,rgba(79,79,79,1) 0%,rgba(0,0,0,1) 100%);
  background: radial-gradient(ellipse at center, rgba(0,0,0,1) 0%,rgba(79,79,79,1) 0%,rgba(0,0,0,1) 100%);
  box-shadow: 0 0 10px rgba(0, 0, 0, 1);
}

#beat-speaker-center-outer {
  @extend %base;
  position: absolute;
  top: 16px;
  left: 16px;
  height: $center1size;
  width: $center1size;
  border: 15px solid #333;
  box-shadow: -3px -3px 15px rgba(0, 0, 0, 0.4), inset -3px -3px 15px rgba(0, 0, 0, 0.5);
  background: -moz-linear-gradient(130deg, rgba(117, 117, 117, 1) 55%, rgba(220, 220, 220, 1) 100%);
  background: -webkit-linear-gradient(130deg, rgba(117, 117, 117, 1) 55%, rgba(220, 220, 220, 1) 100%);
  background: -o-linear-gradient(130deg, rgba(117, 117, 117, 1) 55%, rgba(220, 220, 220, 1) 100%);
  background: -ms-linear-gradient(130deg, rgba(117, 117, 117, 1) 55%, rgba(220, 220, 220, 1) 100%);
  background: linear-gradient(130deg, rgba(117, 117, 117, 1) 55%, rgba(220, 220, 220, 1) 100%);
}

.bezel {
  @extend %base;
  margin: 0 auto;
  height: $bezelsize;
  width: $bezelsize;
  position: relative;
  background-color: #A8A8A8;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.8), inset 3px 3px 10px rgba(0, 0, 0, 0.8), 0 0 2px rgba(0, 0, 0, 0.8), inset 0 0 30px -5px rgba(0, 0, 0, 0.8);
}

.rivet1 {
  @extend %rivet;
  top: 6px;
  left: 50%;
}
.rivet2 {
  @extend %rivet;
  bottom: 6px;
  left: 50%;
}
.rivet3 {
  @extend %rivet;
  top: 50%;
  left: 6px;
}
.rivet4 {
  @extend %rivet;
  top: 50%;
  right: 6px;
}
.rivet5 {
  @extend %rivet;
  top: 18%;
  left: 13.7%;
}
.rivet6 {
  @extend %rivet;
  top: 18%;
  right: 13.5%;
}
.rivet7 {
  @extend %rivet;
  bottom: 17%;
  left: 13.5%;
}
.rivet8 {
  @extend %rivet;
  bottom: 17%;
  right: 13.5%;
}