Overleaf/services/web/frontend/stylesheets/components/tooltip.scss

.tooltip {
  line-height: 20px;

  @include shadow-md;

  &.#{$prefix}tooltip-top {
    bottom: -1px !important;
  }
  &.#{$prefix}tooltip-end {
    top: 1px !important;
    left: -1px !important;
  }
  &.#{$prefix}tooltip-bottom {
    top: -1px !important;
  }
  &.#{$prefix}tooltip-start {
    top: 1px !important;
    right: -1px !important;
  }

  &:not([data-popper-placement]) {
    // Prevents flickering
    position: absolute !important;
    inset: 0 auto auto 0 !important;
    opacity: 0;
  }
}

.tooltip-inner {
  text-align: initial;

  .tooltip-wide & {
    max-width: unset;
  }
}