<label>Email
            <input type="email" class="ss-c-input" value="hello@example.com">
            <span class="ss-c-validation__success ss-c-validation__success--visible">Looks good.</span>
        </label>

<label>Email
            <input type="email" class="ss-c-input" value="not-an-email">
            <span class="ss-c-validation__error ss-c-validation__error--visible">Please enter a valid email.</span>
        </label>