.btn {
  --color: #000000;
  --color2: #ffffff;
  padding: 0.8em 1.75em;
  background-color: #ffffff;
  border-radius: 6px;
  border: 0.3px solid var(--color);
  transition: 4s;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  z-index: 1;
  font-weight: 300;
  font-size: 17px;
  font-family: cursive;
  text-transform: uppercase;
  color: var(--color);
}

.btn::after,
.btn::before {
  content: "";
  display: block;
  height: 100%;
  width: 100%;
  transform: skew(90deg) translate(-50%, -50%);
  position: absolute;
  inset: 50%;
  left: 25%;
  z-index: -1;
  transition: 0.5s ease-out;
  background-color: var(--color);
}

.btn::before {
  top: -50%;
  left: -25%;
  transform: skew(90deg) rotate(180deg) translate(-50%, -50%);
}

.btn:hover::before {
  transform: skew(45deg) rotate(180deg) translate(-50%, -50%);
}

.btn:hover::after {
  transform: skew(45deg) translate(-50%, -50%);
}

.btn:hover {
  color: var(--color2);
}

.btn:active {
  filter: brightness(0.7);
  transform: scale(0.98);
}