/* footer */
.footer {
  padding: 40px 0 55px;
  margin: 0 140px;
  border-top: 4px solid #63c0bb;
  color: #888;
  font-size: 16.5px;
  line-height: 28px;
  text-align: center;
}
.footer > p {
  margin-bottom: 58px;
}

/* quick_menu */
.quick_menu {
  position: fixed;
  right: 40px;
  bottom: 70px;
  z-index: 101;
  text-align: center;
  line-height: 82px;
}
.quick_menu .btn_menu {
  width: 82px;
  height: 82px;
  border-radius: 50%;
  background: #003935;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}
.quick_menu .sub_menu {
  position: absolute;
  right: -333px;
  bottom: 0;
  display: flex;
  width: 100%;
  transition: all 0.8s;
  z-index: -1;
  opacity: 0;
}
.quick_menu li.btn_menu:hover > .sub_menu {
  right: 300px;
  opacity: 1;
}
.quick_menu .sub_menu > li > a {
  display: inline-block;
  width: 82px;
  height: 82px;
  margin-right: 15px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.3);
}
.quick_menu .sub_menu > li:hover {
  transform: translateY(-5px);
}