searxng/searx/static/themes/simple/src/less/style-center.less

/*
--center-page-width overrides the less variable @results-width when the results are centered
see the CSS rules for #results in style.less ( grid-template-columns and gap).

In this file, the --center-page-width values comes from the Oscar theme (Bootstrap 3).

All rules starts with ".center-aligment-yes #main_results" to be enabled only
on the /search URL and when the "center alignment" preference is enabled.
*/

@media screen and (min-width: @phone) {
  .center-aligment-yes #main_results {
    --center-page-width: 48rem;
  }
}

@media screen and (min-width: 62rem) {
  .center-aligment-yes #main_results {
    --center-page-width: 60rem;
  }
}

@media screen and (min-width: @tablet) {
  .center-aligment-yes #main_results {
    --center-page-width: 73rem;
  }
}

@media screen and (min-width: @phone) and (max-width: @tablet) {
  // any change must be reset in @media screen and (min-width: @tablet) { ... }
  .center-aligment-yes #main_results {
    #results {
      grid-template-columns: 60% calc(40% - @results-gap);
      margin-left: 0;
      margin-right: 0;
    }

    #urls {
      .ltr-margin-left(3rem);
    }

    #sidebar {
      .ltr-margin-right(1rem);
    }

    #backToTop {
      .ltr-left(calc(60% + 1rem));
    }
  }
}

@media screen and (min-width: @tablet) {
  .center-aligment-yes #main_results {
    display: flex;
    flex-direction: column;
    align-items: center;

    #search {
      width: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    #search_header {
      grid-template-columns: calc(50% - 4.5rem - var(--center-page-width) / 2) 3rem var(--center-page-width);
      grid-template-areas: "na logo search" "na spacer categories";
      column-gap: 1.2rem;  // from search.less
      width: 100%;
      padding-left: 0;
      padding-right: 0;
    }

    .search_filters {
      .ltr-margin-left(0.5rem);
      width: var(--center-page-width);
    }

    #results {
      // from style.less (when screen width = @tablet, reset layout from tablet)
      .ltr-margin-right(2rem);
      .ltr-margin-left(@results-offset);
      //

      &.only_template_images,
      &.image-detail-open {
        // * grid-template-columns and .ltr-margin-left are set in style.less
        // * With .image-detail-open.only_template_images, the width is set in detail.less
        // * #results is going to be centered because of the #main_results rules,
        //   align-self aligns the results on the left or right according to the language.
        align-self: flex-start;
      }

      &:not(.only_template_images):not(.image-detail-open) {
        // the gap is set in style.less
        .ltr-margin-left(1.5rem);
        grid-template-columns: calc(var(--center-page-width) - @results-gap - @results-sidebar-width) @results-sidebar-width;

        #backToTop {
          .ltr-left(calc(50% - @results-sidebar-width - @results-gap + 1rem + var(--center-page-width) / 2));
        }
      }

      .result .content {
        max-width: inherit;
      }
    }

    // from style.less (when screen width = @tablet, reset layout from tablet)
    #urls {
      .ltr-margin-left(0);
    }

    #sidebar {
      .ltr-margin-right(0);
    }
  }
}