html {
  box-sizing: border-box;
}

*,
*::before,
*::after {
  box-sizing: inherit;
  margin: 0;
  padding: 0;
}

.container {
  position: relative;
  height: 250px;
  width: 300px;
  overflow: hidden;
  visibility: hidden;
  background-color: black;
}

/* #Utd_M {
  visibility: hidden;
} */

#label_50 {
  clip-path: url(#label_mask);
}

#label_percentage {
  clip-path: url(#label_mask);
}

#label_off {
  clip-path: url(#label_mask);
}

/* Code below for the button */

.btn {
  height: 30px;
  width: 60px;
  background-color: rgb(0, 0, 0);
  position: fixed;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  left: 10px;
  z-index: 100;
  color: white;
  box-shadow: none;
  border: none;
  font-size: 15px;
  border: 1px solid black;
}

.btn:hover {
  color: white;
  border: 1px solid rgba(0, 0, 0, 0.8);
}

#pause {
  left: 10px;
  top: 260px;
}