<form action="#" method="post">
                <div class="Editor_content">
                    <div class="mainTextCampaign">
                        <strong class="title-1" >Campagne editor</strong>
                    </div>
                             <div id = "page1">
                                <div>
                                    <div class="text_input">
                                        <label for="text-input">Ceci est la page 1</label>
                                    </div>
                                    <div>
                                        <textarea class="textareaobj" name="needs" id="textarea-input" rows="9" placeholder="Truc"></textarea>
                                        <span><?php echo $needs_err; ?></span>
                                    </div>
                                </div>
                                <div>
                                    <div class="text_input">
                                        <label for="text-input">Objectif</label>
                                    </div>
                                    <div>
                                        <textarea class="textareaobj" name="needs" id="textarea-input" rows="9" placeholder="Vos attentes"></textarea>
                                        <span><?php echo $needs_err; ?></span>
                                    </div>
                                    <div class="button_position">
                                         <div onclick="nextPage()" class="button">
                                             <i></i> Suite
                                         </div>
                                    </div>
                                </div>
                            </div>
                             <div id = "page2">
                                <div>
                                    <div class="text_input">
                                        <label for="text-input">Ceci est la page 2</label>
                                    </div>
                                    <div>
                                        <textarea class="textareaobj" name="needs" id="textarea-input" rows="9" placeholder="Page2"></textarea>
                                        <span><?php echo $needs_err; ?></span>
                                    </div>
                                </div>
                                <div>
                                    <div class="text_input">
                                        <label for="text-input">Objectif</label>
                                    </div>
                                    <div>
                                        <textarea class="textareaobj" name="needs" id="textarea-input" rows="9" placeholder="Vos attentes"></textarea>
                                        <span><?php echo $needs_err; ?></span>
                                    </div>
                                    <div class="button_position">
                                         <button class="button" type="submit">
                                             <i></i> Suite
                                         </button>
                                    </div>
                                </div>
                            </div>
                    </div>
                </div>
        </form>