/* Скролл */
.btn-up {
    position: fixed;
    background-color: rgba(208, 207, 215, 0.3);;
    right: 30px;
    bottom: 40px;
    border-radius: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    transition: opacity 0.3s ease-in-out;
    opacity: 1;
  }
  
  .btn-up::before {
    content: "";
    width: 25px;
    height: 25px;
    background: transparent no-repeat center center;
    background-size: 100% 100%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20'%3E%3Cg fill='none' stroke='%23fff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 17V4M3 10l7-7 7 7'/%3E%3C/g%3E%3C/svg%3E");
  }

.btn-up_hide {
  display: none;
}

.btn-up_hiding {
    opacity: 0;
  }

@media (hover: hover) and (pointer: fine) {
  .btn-up:hover {
    background-color: #4C46A0; /* цвет заднего фона при наведении */
  }
}