<div class="tabular_radio">
    <label>
        <input type="radio" name="feature" id="feature_1" checked="checked">
        <span>Feature 1</span>
    </label>
    <label>
        <input type="radio" name="feature" id="feature_2">
        <span>Feature 2</span>
    </label>
    <label>
        <input type="radio" name="feature" id="feature_3">
        <span>Feature 3</span>
    </label>
    <label>
        <input type="radio" name="feature" id="feature_4">
        <span>Feature 4</span>
    </label>
</div>