gitlab-org--gitlab-foss/app/assets/stylesheets/components/popover.scss

.popover {
  max-width: $popover-max-width;
  border: 1px solid $gray-200;
  box-shadow: 0 2px 3px 1px $gray-200;
  font-size: $gl-font-size-small;

  .category-icon {
    color: $gray-600;
  }

  /**
  * Blue popover variation
  */
  &.blue {
    background-color: $blue-600;
    border-color: $blue-600;

    .popover-body {
      color: $white-light;
    }

    &.bs-popover-bottom {
      .arrow::before,
      .arrow::after {
        border-bottom-color: $blue-600;
      }
    }

    &.bs-popover-top {
      .arrow::before,
      .arrow::after {
        border-top-color: $blue-600;
      }
    }

    &.bs-popover-right {
      .arrow::after,
      .arrow::before {
        border-right-color: $blue-600;
      }
    }

    &.bs-popover-left {
      .arrow::before,
      .arrow::after {
        border-left-color: $blue-600;
      }
    }
  }
}

.bs-popover-top {
  /* When popover position is top, the arrow is translated 1 pixel
  *  due to the box-shadow include in our custom styles.
  */
  > .arrow::before {
    border-top-color: $gray-200;
    bottom: 1px;
  }

  > .arrow::after {
    bottom: 2px;
  }
}

.bs-popover-bottom {
  > .arrow::before {
    border-bottom-color: $gray-200;
  }

  > .popover-header::before {
    border-color: $white-light;
  }
}

.bs-popover-right > .arrow::before {
  border-right-color: $gray-200;
}

.bs-popover-left > .arrow::before {
  border-left-color: $gray-200;
}

.popover-header {
  background-color: $white-light;
  font-size: $gl-font-size-small;
}

.popover-body {
  padding: $gl-padding $gl-padding-12;

  > .popover-hr {
    margin: $gl-padding 0;
  }
}

/**
* mr_popover component
*/
.mr-popover {
  .text-secondary {
    font-size: 12px;
    line-height: 1.33;
  }
}

.onboarding-popover {
  box-shadow: 0 2px 4px $dropdown-shadow-color;

  .popover-body {
    font-size: $gl-font-size;
    line-height: $gl-line-height;
    padding: $gl-padding;
  }

  .popover-header {
    display: none;
  }

  .accept-mr-label {
    background-color: $accepting-mr-label-color;
    color: $white-light;
  }
}

/**
* user_popover component
*/
.user-popover {
  padding: $gl-padding-8;
  line-height: $gl-line-height;
}

.onboarding-welcome-page {
  .popover {
    min-width: auto;
    max-width: 40%;

    .popover-body {
      padding-top: $gl-padding;
      padding-bottom: $gl-padding;
      font-size: $gl-font-size-small;
    }
  }
}