Sainsbury's Design System.

<!doctype html>
<html lang="en">
  <meta charset="utf-8" /><meta
    name="viewport"
    content="width=device-width,initial-scale=1"
  /><title>Collection slot study</title
  ><style>
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      background: #fff;
      color: #262626;
      font:
        16px/1.5 Arial,
        sans-serif;
      padding: 32px;
    }
    header {
      border-top: 8px solid #f06c00;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      gap: 24px;
    }
    h1 {
      font-size: 38px;
      line-height: 1.316;
      margin: 8px 0 16px;
    }
    h2 {
      font-size: 24px;
      line-height: 1.333;
      margin: 0 0 16px;
    }
    .eyebrow,
    small {
      font-size: 14px;
      color: #404040;
    }
    p {
      margin: 8px 0 24px;
    }
    .basket {
      font-size: 48px;
      line-height: 1;
      background: #fef5f0;
      border-radius: 50%;
      width: 96px;
      height: 96px;
      display: grid;
      place-items: center;
      color: #7f0442;
    }
    main {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 32px;
      margin-top: 24px;
    }
    fieldset {
      border: 0;
      padding: 0;
      margin: 0 0 24px;
    }
    legend {
      font-weight: bold;
      margin-bottom: 16px;
    }
    .dates {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    button,
    select {
      font: inherit;
      min-height: 48px;
      padding: 12px 16px;
      border: 1px solid #737373;
      border-radius: 2px;
      background: white;
      color: #262626;
      cursor: pointer;
    }
    .dates button[aria-pressed="true"] {
      border: 2px solid #f06c00;
      background: #fef5f0;
      padding: 11px 15px;
    }
    .slots {
      display: grid;
      gap: 8px;
    }
    .slot {
      display: flex;
      gap: 12px;
      align-items: center;
      padding: 16px;
      border: 1px solid #d8d8d8;
      border-radius: 2px;
      cursor: pointer;
    }
    .slot:has(input:checked) {
      border: 2px solid #f06c00;
      padding: 15px;
      background: #fef5f0;
    }
    .slot:has(input:disabled) {
      background: #f2f2f2;
      cursor: default;
    }
    .slot input {
      accent-color: #c15100;
      width: 20px;
      height: 20px;
    }
    .slot strong {
      margin-left: auto;
    }
    .unavailable {
      color: #404040;
    }
    .primary {
      background: #f06c00;
      border: 2px solid #f06c00;
      font-weight: bold;
      color: #000;
    }
    .primary:hover {
      background: #e55000;
      border-color: #e55000;
    }
    .primary:active {
      background: #c15100;
      border-color: #c15100;
    }
    .summary {
      background: #fef5f0;
      border-radius: 12px;
      padding: 24px;
      align-self: start;
    }
    .summary dl {
      margin: 0;
    }
    .summary dt {
      font-size: 14px;
      margin-top: 16px;
    }
    .summary dd {
      margin: 4px 0;
      font-weight: bold;
    }
    #result {
      padding: 16px;
      background: #e6f4ed;
      color: #246127;
      margin-top: 24px;
    }
    button:focus-visible,
    input:focus-visible {
      outline: 3px solid #135ca3;
      outline-offset: 3px;
    }
    footer {
      border-top: 1px solid #d8d8d8;
      margin-top: 32px;
      padding-top: 16px;
      font-size: 14px;
      color: #404040;
    }
    [hidden] {
      display: none !important;
    }
    @media (max-width: 767px) {
      body {
        padding: 16px;
      }
      main {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      h1 {
        font-size: 30px;
      }
      .basket {
        display: none;
      }
      .dates button {
        flex: 1;
      }
      .summary {
        padding: 16px;
      }
    }
  </style>
  <body>
    <header>
      <div>
        <span class="eyebrow">GROCERIES / ORIGINAL COLLECTION STUDY</span>
        <h1>Choose a collection slot</h1>
        <p>
          Select a sample day and time. No order or real availability is
          connected.
        </p>
      </div>
      <div class="basket" aria-hidden="true">▥</div>
    </header>
    <main>
      <section>
        <fieldset>
          <legend>Collection day</legend>
          <div class="dates" id="dates"></div>
        </fieldset>
        <fieldset>
          <legend id="slotLabel">Available times</legend>
          <div id="slots" class="slots"></div>
        </fieldset>
      </section>
      <aside class="summary">
        <h2>Collection details</h2>
        <dl>
          <dt>Sample location</dt>
          <dd>Riverside collection point</dd>
          <dt>Day and time</dt>
          <dd id="selection"></dd>
          <dt>Sample fee</dt>
          <dd id="fee"></dd>
        </dl>
        <p><small>All fees and slots are illustrative.</small></p>
        <button class="primary" id="review">Review collection</button>
        <div id="result" role="status" hidden></div>
      </aside>
    </main>
    <footer>
      Independent HTML interpretation of Sainsbury’s public guidance. Arial
      fallback; no private Fable runtime or brand font assets.
    </footer>
    <script>
      const days = [
        {
          label: "Monday",
          slots: [
            ["09:00–10:00", 1, true],
            ["12:00–13:00", 0, true],
            ["17:00–18:00", 2, false],
          ],
        },
        {
          label: "Tuesday",
          slots: [
            ["09:00–10:00", 0, false],
            ["12:00–13:00", 1, true],
            ["17:00–18:00", 1, true],
          ],
        },
        {
          label: "Wednesday",
          slots: [
            ["09:00–10:00", 0, true],
            ["12:00–13:00", 0, true],
            ["17:00–18:00", 2, true],
          ],
        },
      ];
      let day = 0,
        slot = 0;
      const $ = (id) => document.getElementById(id);
      function update() {
        const choice = days[day].slots[slot];
        $("selection").textContent = days[day].label + ", " + choice[0];
        $("fee").textContent =
          choice[1] === 0 ? "No collection fee" : "£" + choice[1].toFixed(2);
        $("result").hidden = true;
      }
      function render() {
        $("dates").replaceChildren(
          ...days.map((d, i) => {
            let b = document.createElement("button");
            b.textContent = d.label;
            b.setAttribute("aria-pressed", i === day);
            b.onclick = () => {
              day = i;
              slot = d.slots.findIndex((s) => s[2]);
              render();
            };
            return b;
          }),
        );
        $("slotLabel").textContent = days[day].label + " collection times";
        $("slots").replaceChildren(
          ...days[day].slots.map((s, i) => {
            let l = document.createElement("label");
            l.className = "slot";
            let input = document.createElement("input");
            input.type = "radio";
            input.name = "time";
            input.checked = i === slot;
            input.disabled = !s[2];
            input.onchange = () => {
              slot = i;
              update();
            };
            let text = document.createElement("span");
            text.textContent = s[0];
            let fee = document.createElement("strong");
            fee.textContent = s[2]
              ? s[1] === 0
                ? "No fee"
                : "£" + s[1].toFixed(2)
              : "Unavailable";
            l.append(input, text, fee);
            return l;
          }),
        );
        update();
      }
      $("review").onclick = () => {
        $("result").hidden = false;
        $("result").textContent =
          "Local selection ready: " +
          $("selection").textContent +
          ". No slot has been reserved.";
      };
      render();
    </script>
  </body>
</html>