Multistep registration form http://profilepress.net/downloads/stride-wordpress-multi-step-registration-form/

multi-step-form.html

<form method="post" novalidate>
    <div id="msform">
        <!-- progressbar -->
        <ul id="progressbar">
            <li class="active">Account Setup</li>
            <li>Social Profiles</li>
            <li>Personal Details</li>
        </ul>
        <!-- fieldsets -->
        <fieldset>
            <h2 class="fs-title">Create your account</h2>

            <h3 class="fs-subtitle">This is step 1</h3>
            [reg-username placeholder="Username"]
            [reg-email placeholder="Email"]
            [reg-password placeholder="Password"]
            <input type="button" name="next" class="next action-button" value="Next"/>
        </fieldset>
        <fieldset>
            <h2 class="fs-title">Social Profiles</h2>

            <h3 class="fs-subtitle">Your presence on social networks</h3>
            [reg-cpf key="twitter" type="text" placeholder="Twitter"]
            [reg-cpf key="facebook" type="text" placeholder="Facebook"]
            [reg-cpf key="google" type="text" placeholder="Google Plus"]
            <input type="button" name="previous" class="previous action-button" value="Previous"/>
            <input type="button" name="next" class="next action-button" value="Next"/>
        </fieldset>
        <fieldset>
            <h2 class="fs-title">Personal Details</h2>

            <h3 class="fs-subtitle">We will never sell it</h3>
            [reg-first-name placeholder="First Name"]
            [reg-last-name placeholder="Last Name"]
            [reg-nickname placeholder="Nickname"]
            [reg-bio placeholder="Biography"]
            <input type="button" name="previous" class="previous action-button" value="Previous"/>
            [reg-submit class="submit action-button" value="Submit"]
        </fieldset>
    </div>
</form>