body {
  overscroll-behavior-y: auto;
}
.pull-to-refresh {
  position: fixed;
  top: -50px;
  width: 100%;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: top 0.7s ease-in-out;
}
.pull-to-refresh.visible {
  top: 0;
}