:root {
  --headingTextColor: #000000;
  --bodyTextColor: #000000;
  --linkColor: #000000;
  --iconColor: #000000;
  --buttonBackgroundColor: #374151;
  --buttonTextColor: #ffffff;
}


      .stacks-doc .layout-content .stacks-button-add-save-list,
      .stacks-doc .layout-content .stacks-button-citations,
      .stacks-doc .container-main-search-block .button,
      .page-route-name-user-login .button,
      .stacks-doc .modal-content .button  {
        background-color: var(--buttonBackgroundColor);
        color: var(--buttonTextColor);
      }
      .stacks-doc .layout-content .page-title {
        color: var(--headingTextColor);
      }
      .stacks-doc .layout-content p,
      .stacks-doc .layout-content label,
      .stacks-doc .layout-content .label,
      .page-route-name-user-login p {
        color: var(--bodyTextColor);
      }
      .stacks-doc .layout-content a:not(.button) {
        color: var(--linkColor);
      }
      .stacks-doc .layout-content .btn-icon, .stacks-doc .layout-content .icon {
        color: var(--iconColor);
      }