* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(18, 15, 59);
}

#left-weight {
  color: whitesmoke;
}
#right-weight {
  color: whitesmoke;
}

.scene {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.plank {
  width: 400px;
  height: 12px;
  background-color: #a8782f;
  transform-origin: center center;
  transition: transform 0.5s ease;
  cursor: pointer;
  position: relative;
}

.pivot {
  width: 0;
  height: 0;
  border-left: 40px solid transparent;
  border-right: 40px solid transparent;
  border-bottom: 40px solid #888;
}

.object {
  width: 20px;
  height: 20px;
  position: absolute;
  background-color: white;
  position: absolute;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  top: -20px;
}