HTML

checkbox group

<form action="#" method="post" class="demoForm" id="demoForm">
    
    <fieldset>
        <legend>Demo: Checkboxes Sharing Same Name</legend>
    
    <p>Check the types of sports or fitness activities you engage in on a regular basis.</p>
    
    <p>
        <label><input type="checkbox" name="sports[]" value="cycling" /> cycling</label>
        <label><input type="checkbox" name="sports[]" value="running" /> running</label>
        <label><input type="checkbox" name="sports[]" value="visit gym" /> visit gym</label>
        <label><input type="checkbox" name="sports[]" value="swimming" /> swimming</label>
        <label><input type="checkbox" name="sports[]" value="team sports" /> team sport(s)</label>
        <label><input type="checkbox" name="sports[]" value="other" /> other</label>
    </p>
    
    </fieldset>
    
</form>