:root {
  font-size: 1em;
  box-sizing: border-box;
}

*,
::after,
::before {
  margin: 0;
  margin-inline: 0;
  margin-block: 0;
  padding: 0;
  padding-inline: 0;
  padding-block: 0;
  box-sizing: inherit;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  scrollbar-width: 1px;
  scrollbar-color: #bbb;
}
