👉 Checkbox

<label>
    <input type="checkbox" name="checked" checked>
    Checked
</label>
<br>
<label>
    <input type="checkbox" name="readonly" readonly>
    Readonly as Indeterminate
</label>
<br>
<label>
    <input type="checkbox" name="empty">
    Empty
</label>
<hr>
<label>
    <input type="checkbox" name="checked_disabled" checked disabled>
    Checked Disabled
</label>
<br>
<label>
    <input type="checkbox" name="readonly_disabled" readonly disabled>
    Readonly Disabled
</label>
<br>
<label>
    <input type="checkbox" name="empty_disabled" disabled>
    Empty Disabled
</label>