scroll-lock-body/dist/index.css

scroll lock the body and remember the position

html {
  overflow-y: scroll;
}
html[data-scroll-lock-is-active] > body {
  overflow: hidden;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  position: fixed;
}
body {
  margin: 0;
  overflow-y: auto; /* overflow-y: scroll -> shows double scroll */
}