chromium/chrome/browser/resources/settings/privacy_sandbox/privacy_sandbox_manage_topics_subpage.html

<style include="cr-shared-style settings-shared iron-flex">
  #explanationText {
    padding: 4px var(--cr-section-padding) 12px;
  }

  .outer-row {
    align-items: center;
    display: flex;
    min-height: var(--cr-section-two-line-min-height);
    width: 100%;
  }

  .topic-toggle-row:hover {
    background-color: var(--cr-hover-background-color);
  }

  .topic-toggle-row {
    --cr-icon-button-margin-end: 20px;
    padding: 0 var(--cr-section-padding);
  }

  .icon {
    margin-inline-end: var(--cr-icon-button-margin-end);
  }

  .label-wrapper {
    padding: 16px 0;
    margin-inline-end: 20px;
  }

</style>
<div id="explanationText">
  $i18n{manageTopicsPageDescription}
  <span id="learnMoreLink" on-click="onLearnMoreClick_">
    $i18nRaw{manageTopicsPageLearnMoreLink}
  </span>
</div>
<template is="dom-repeat" items="[[firstLevelTopicsList_]]">
  <div class="topic-toggle-row" on-click="onToggleRowClick_" actionable>
    <div class="outer-row">
      <span class="icon">
        <iron-icon slot="icon"
            icon="[[computeTopicIcon_(item.topic.topicId)]]">
        </iron-icon>
      </span>
      <div class="flex label-wrapper">
        <div class="label">[[item.topic.displayString]]</div>
        <div class="cr-secondary-text sub-label">
          <span class="sub-label-text">[[item.topic.description]]</span>
        </div>
      </div>
      <cr-toggle id="toggle-[[item.topic.topicId]]"
          on-change="onToggleChange_"
          checked="[[!item.removed]]"
          aria-label="[[item.topic.displayString]]"
          aria-description="[[item.topic.description]]"></cr-toggle>
    </div>
  </div>
</template>
<template is="dom-if" if="[[shouldShowBlockTopicDialog_]]" restamp>
  <settings-simple-confirmation-dialog id="blockTopicDialog"
      title-text="[[blockTopicDialogTitle_]]"
      body-text="[[blockTopicDialogBody_]]"
      confirm-text="$i18n{topicsPageBlockTopic}"
      on-close="onBlockTopicDialogClose_">
  </settings-simple-confirmation-dialog>
</template>