feather/style.css

.rubik {
  font-family: "Rubik", sans-serif;
}

.font-smoothing {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 0.875rem;
  line-height: 1.5;
  text-transform: uppercase;
  text-align: center;
  letter-spacing: 1px;
  text-decoration: none;
}

.btn-outline {
  box-shadow: inset 0 0 0 1px currentColor;
}

.icon {
  width: 1.5rem;
  height: 1.5rem;
  box-sizing: content-box;
}

.icon svg {
  stroke: currentColor;
}

.tooltip {
  position: absolute;
  top: calc(100% + 1rem);
  left: 50%;
  transform: translateX(-50%) scale(0.75);
  transform-origin: 50% -1rem;
  opacity: 0;
  visibility: hidden;
  cursor: default;
  z-index: 1;
  transition-property: opacity, visibility, transform;
  transition-duration: 0.15s;
  transition-timing-function: ease-in-out;
}

/* tooltip arrow */
.tooltip::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -1rem);
  display: block;
  width: 2.5rem;
  height: 1.5rem;
  background-image: url("assets/tooltip-arrow.svg");
  background-size: 100%;
}

.icon:hover .tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) scale(1);
  transition-delay: 0.15s;
}