Fieldsets

<fieldset>
    <legend>Other Form Controls</legend>
    <p>
        <label for="select">Select</label><br />
        <select id="select">
            <option value="1">Option 1</option>
            <option value="2">Option 2</option>
            <option value="3">Option 3</option>
            <optgroup label="Subgroup">
                <option value="4">Option 4</option>
                <option value="5">Option 5</option>
            </optgroup>
        </select>
    </p>
    <p>
        <label for="selectmultiple">Multiselect</label><br />
        <select id="selectmultiple" multiple>
            <option value="1">Option 1</option>
            <option value="2">Option 2</option>
            <option value="3">Option 3</option>
            <option value="4">Option 4</option>
            <option value="5">Option 5</option>
            <option value="6">Option 6</option>
            <optgroup label="Subgroup">
                <option value="7">Option 7</option>
                <option value="8">Option 8</option>
            </optgroup>
        </select>
    </p>
</fieldset>