.scrollup {
  border: 1px solid;
  bottom: 82px;
  cursor: pointer;
  display: none;
  font-size: 13px;
  font-weight: 600;
  min-height: 40px;
  padding: 2px;
  position: fixed;
  text-align: center;
  width: 40px;
  z-index: 9999
}

.scrollup:hover {
  border-color: #fff;
  text-decoration: none
}

.scroll-img {
  display: block;
  margin: 0 auto
}

.scrollup .scroll-img.default-img {
  display: block
}

.scrollup .scroll-img.hover-img {
  display: none
}

.scrollup:hover .scroll-img.default-img {
  display: none
}

.scrollup:hover .scroll-img.hover-img {
  display: block
}