.b2top-button {
  opacity: 0;
  position: fixed;
  bottom: 60px;
  right: 60px;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  //background: radial-gradient(circle at 50%, #fff 50%, #fff 60%, transparent 60%, transparent 100%);
  background-color: $color-primary-blue;
  cursor: pointer;
  transition: opacity 0.3s linear;
  pointer-events: none;
  z-index: 10;

  svg.icon {
    width: 40%;
    height: 40%;
    fill: #fff;
    transform: rotate(180deg);
  }

  &.js-visible {
    opacity: 1;
    pointer-events: all;
  }
}

@include media("tablet-l") {
  .b2top-button {
    width: 40px;
    height: 40px;
    right: 20px;
    bottom: 40px;
  }
}

@include media("tablet-s") {
  .b2top-button {
    width: 28px;
    height: 28px;
    right: 10px;
    bottom: 28px;
  }
}