metronome/style.css at main · ZShijun/metronome · GitHub

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body {
  padding: 0;
  margin: 0;
  background-color: #fff;
}

.metronome-box {
  position: relative;
  width: 368px;
  height: 624px;
  margin: 100px auto 0;
  background: url("bg.png") no-repeat -120px 0px;
  background-size: 487px;
}

.metronome-box .pendulum {
  position: absolute;
  top: 150px;
  left: 161px;
  width: 54px;
  height: 424px;
  overflow: hidden;
  background: url("bg.png") no-repeat 3px -170px;
  animation: 1s infinite ease-in-out alternate;
  background-size: 487px;
  animation-delay: -500ms;
  transform-origin: 22px 392px;
}

@keyframes pendulum {
  0% {
    transform: rotate(30deg);
  }
  100% {
    transform: rotate(-30deg);
  }
}

.metronome-box .bpm-slider {
  -webkit-appearance: none;
  appearance: none;
  height: 54px;
  width: 280px;
  transform: rotate(90deg);
  transform-origin: right bottom;
  background: transparent;
  position: absolute;
  top: 264px;
  left: -288px;
}

.metronome-box .bpm-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 54px;
  width: 54px;
  transform: rotate(-90deg);
  background: url("bg.png") no-repeat -38px -73px;
  background-size: 487px;
  cursor: grabbing;
}

.metronome-box .bpm-value {
  position: absolute;
  top: 568px;
  left: 0;
  width: 100%;
  text-align: center;
  font-size: 32px;
  font-weight: bold;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.25);
}

.control-btns {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin-top: 20px;
}
.control-btns button {
  font-size: 32px;
  font-weight: bold;
  padding: 5px 10px;
}