wagtail/client/scss/layouts/_listing.scss

@include media-breakpoint-up(sm) {
  .fields--image-search {
    max-width: 1000px;

    .field-col {
      padding-inline-start: 0;

      .field {
        display: flex;
        flex-direction: column;

        .field-content,
        label {
          width: auto;
          max-width: 85%;
          padding-top: 0;
        }
      }
    }

    > li {
      padding-top: 0;
    }

    .tagfilter legend {
      width: auto;
    }
  }
}