*, *::before, *::after {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
body {
  background-color: #111;
  color: #fff;
  min-height: 100vh;
  display: flex;
  place-items: center;
  justify-content: center;
}
.gravityButton {
  display: grid;
  place-items: center;
  width: 192px;
  aspect-ratio: 1;
  border-radius: 50%;
}
.gravityButton > button {
  font: inherit;
  width: 64px;
  aspect-ratio: 1;
  background: none;
  border-radius: 50%;
  border: 2px solid #fff;
  transform: translate(var(--tx, 0), var(--ty, 0));
  opacity: var(--opacity, 0.25);
  cursor: pointer;
  transition: all 0.2s ease-out;
}
.gravityButton > button:hover, .gravityButton > button:focus-visible {
  --_fill: var(--color, #fff);
}
.gravityButton > button:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
  opacity: 1;
}
.buttonIcon {
  width: 50%;
  fill: var(--_fill, #fff);
  transition: fill 0.3s;
}