* {
  margin: 0;
  padding: 0;
}

#c {
  /* background: url("./img/space_stars_bg.jpg") no-repeat center center; */
  background: black;
  background-size: cover;
}
.btn-wrapper {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  position: fixed;
  bottom: 5px;
  left: 2%;
  width: 120px;
}
.btn {
  background: white;
  color: black;
  font-weight: bold;
  font-size: 15px;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  border: none;
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none; /* Safari */
  -khtml-user-select: none; /* Konqueror HTML */
  -moz-user-select: none; /* Old versions of Firefox */
  -ms-user-select: none; /* Internet Explorer/Edge */
  user-select: none;
  outline: none;
  cursor: pointer;
}

#msg {
  position: absolute;
  background: transparent;
  color: white;
  font-weight: bold;
  font-size: 20px;
  text-align: center;
  font-family: sans-serif;
  margin: 0 auto;
}

.btn-zoom {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 40px;
  left: 10px;
  height: 120px;
  justify-content: space-between;
}

.quality-select {
  position: fixed;
  top: 20px;
  right: 5px;
}