Place in theme.liquid:


  <div id="shopify-section-main-404" class="shopify-section section-wrapper"><div class="section-background color-scheme-1"></div>
<div
  class="
    section section--page-width color-scheme-1
    
  "
>
  <div>
    <div
      class="
        spacing-style
        layout-panel-flex
        layout-panel-flex--column
        section-content-wrapper
        mobile-column
      "
      style="
        --flex-direction: column; --flex-wrap: nowrap; --flex-wrap-mobile: wrap;

--gap: 12px;

--horizontal-alignment: center; --vertical-alignment: center;
--vertical-alignment-mobile: center;

        --padding-block-start: 0px;--padding-block-end: 0px;
      "
    >
      
    </div>
  </div>
</div>


</div>