step by step form

<form id="myForm" method="post" >

  <ul id="steps">

    <li id="step1" class="active">Sign Up</li>

    <li id="step2">More Info</li>

    <li id="step3">Final Step</li>

    <li id="step4">Review</li>

  </ul>

  <fieldset id="set1">

    <input type="email" id="email" name="email" placeholder="Email" required>

    <input type="password" id="password" name="password" placeholder="Password" required>

    <input type='button' id="next1" value='Next' class="next btn" >

  </fieldset>

  <fieldset id="set2">

    <input type="text" id="firstname" name="firstname" placeholder="FirstName">

    <input type="text" id="lastname" name="lastname" placeholder="LastName">

    <input type='button' id="previous2" value='Previous' class="previous btn">

    <input type='button' id="next2" value='Next' class="next btn">

  </fieldset>

  <fieldset id="set3">

    <input type="text" id="facebook" name="facebook" placeholder="Facebook">

    <input type="text" id="other" name="other" placeholder="Other Links">

    <input type='button' id="previous3" value='Previous' class="previous btn">

    <input type='button' id="next3" value='Review' class="next btn">

  </fieldset>

  <fieldset id="review">

    <div id="review">Review Here</div><br>

    <input type='button' id="next4" value='Submit' class="btn">

  </fieldset>

    <fieldset id="submit">

        <h2>Done!<br/>Thank you!</h2>

    </fieldset>

</form>

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