.navbar {
  transition: all 0.5s ease-in-out;
}

.navbar-sticky {
  background: #fff;
  opacity: 0.9;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.to-top-btn {
  position: fixed;
  z-index: 20;
  bottom: 20px;
  right: 20px;
  opacity: 0;
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 50%;
  outline: none;
  background-color: #44434a;
  cursor: pointer;
  transition: all 0.5s ease-in-out;
}

.to-top-btn:hover {
  background-color: #1d1d21;
}

.to-top-btn img {
  margin-bottom: 0.25rem;
  width: 18px;
}

.show {
  opacity: 1;
}