core/themes/claro/css/components/views-exposed-form.pcss.css
/**
 * @file
 * Visual styles for views exposed form.
 */

/**
 * Use flexbox and some margin resets to make the fields + actions go inline.
 *
 * For (at least) Media Library, this file is typically inserted by AJAX add_css
 * command when the dialog is opened. The AJAX add_css command always adds the
 * missing-but-required CSS assets to the beginning of the HTML <head>. Because
 * of this, we cannot rely on the expected loading order of the CSS assets.
 * This is why we have to double these selectors: we have to get the expected
 * output even for the Media Library modal.
 *
 * @todo Remove double selectors after https://www.drupal.org/node/1461322
 * has been resolved.
 */

.views-exposed-form {
  &.views-exposed-form {
    display: flex;
    flex-wrap: wrap;
    margin-block: var(--space-l);
    padding: var(--space-xs) var(--space-l) var(--space-l) var(--space-l);
    border: var(--details-border-size) solid var(--details-border-color);
    border-radius: var(--details-border-size-radius);
    background-color: var(--color-white);
    box-shadow: var(--details-box-shadow);
  }
}
.views-exposed-form--preview {
  &.views-exposed-form--preview {
    margin-top: 0;
  }
}

.views-exposed-form__item {
  &.views-exposed-form__item {
    max-width: 100%;
    margin-block: var(--space-s) 0;
    margin-inline: 0 var(--space-xs);
  }
}

.views-exposed-form__item--preceding-actions {
  &.views-exposed-form__item--preceding-actions {
    margin-inline-end: var(--space-m);
  }
}

.views-exposed-form__item--actions {
  &.views-exposed-form__item--actions .button {
    margin-block: 0;
    &:last-child {
      margin-inline-end: 0;
    }
  }
}

.views-exposed-form .form-item--no-label,
.views-exposed-form__item.views-exposed-form__item.views-exposed-form__item--actions {
  /* Line height of a label + existing margin for the element + margin for label */
  margin-top: calc(var(--line-height-form-label) + var(--space-s) + var(--space-xs));
}
