.wj-gauge {
  width: 50%;
  height: 150px;
  margin: 20px auto;
  padding: 12px;
  background: rgba(0, 0, 0, .02);
  box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);  
}
.wj-gauge .wj-pointer {
  fill: black;
}
.wj-gauge .wj-face,  
.wj-gauge .wj-pointer,
.wj-gauge .wj-thumb,
.wj-gauge .wj-ranges, 
.wj-gauge .wj-ticks, 
.wj-gauge .wj-value,
.wj-gauge .wj-min,
.wj-gauge .wj-max {
  opacity: .25;
}
.wj-gauge .wj-face:hover,
.wj-gauge .wj-pointer:hover,
.wj-gauge .wj-thumb:hover,
.wj-gauge .wj-ranges:hover,
.wj-gauge .wj-ticks:hover, 
.wj-gauge .wj-value:hover,
.wj-gauge .wj-min:hover,
.wj-gauge .wj-max:hover {
  opacity: 1;
}