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HTML

              
                <script src="https://smtpjs.com/v3/smtp.js">
</script>

<div class="container">
  <!-- Top Navigation -->
  <section>
    <form id="theForm" class="simform" autocomplete="off" action="https://existmusical.com/wp-content/uploads/FormPHP.php"
   accept-charset="UTF-8"
   enctype="multipart/form-data"
   method="POST">
      <div class="simform-inner">
        <ol class="questions">
          <li>
            <span><label for="q1">What is your objective?</label></span>
            <input id="q1" name="q1" type="text" required/>
          </li>
          <li>
            <span><label for="q2">Why is this our objective?</label></span>
            <input id="q2" name="q2" type="text" required/>
          </li>
          <li>
            <span><label for="q3">How will we measure success?</label></span>
            <input id="q3" name="q3" type="text" required/>
          </li>
          
          <li>
            <span><label for="q4">contact information</label></span>
            <input id="q3" name="q4" type="text" required/>
          </li>
          
        </ol>
        <!-- /questions -->
        
        <div class="controls">
          <button class="next"></button>
          <div class="progress"></div>
          <span class="number">
								<span class="number-current"></span>
          <span class="number-total"></span>
          </span>
          <span class="error-message"></span>
        </div>
        <!-- / controls -->
      </div>
      <!-- /simform-inner -->
      <span class="final-message"></span>
    </form>
    <!-- /simform -->
  </section>
</div>
<!-- /container -->
              
            
!

CSS

              
                /* style-001.css */
@import url('https://fonts.googleapis.com/css?family=Open+Sans:600&display=swap');

@import url('https://fonts.googleapis.com/css?family=Archivo&display=swap');

*, *:after, *:before { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }
.clearfix:before, .clearfix:after { content: ''; display: table; }
.clearfix:after { clear: both; }

body {
	background: #ffffff;
	color: #4b0056;
	font-size: 100%;
	line-height: 2;
	font-family: 'Archivo', sans-serif;
}

a {
	color: rgba(28,28,71,0.61);
	text-decoration: none;
	outline: none;
}

a:hover, a:focus {
	color: rgba(28,28,71,0.61);
}

/* To Navigation Style */

section {
	padding: 5em 2em 10em;
	background: #ffffff;
	text-align: center;
}

section.related {
	padding: 3em 1em 4em;
	background: #465650;
	color: rgba(0,0,0,0.4);
	font-size: 1.5em;
}

.related > a {
	max-width: 80%;
	border: 2px solid rgba(0,0,0,0.3);
	display: inline-block;
	text-align: center;
	margin: 20px 10px;
	padding: 25px;
	-webkit-transition: color 0.3s, border-color 0.3s;
	transition: color 0.3s, border-color 0.3s;
}

.related a:hover {
	border-color: rgba(0,0,0,0.6);
}

.related a img {
	max-width: 100%;
	opacity: 0.4;
	-webkit-transition: opacity 0.3s;
	transition: opacity 0.3s;
}

.related a:hover img,
.related a:active img {
	opacity: 1;
}

.related a h3 {
	margin: 0;
	padding: 0.5em 0 0.3em;
	max-width: 300px;
	font-weight: 400;
	font-size: 0.75em;
	text-align: left;
}

@media screen and (max-width: 44.75em) {
	section { padding: 1em 2em; }
}

@media screen and (max-width: 25em) {
	section.related { font-size: 1.2em; }
}

/* style-002.css */
.simform {
	position: relative;
	margin: 0 auto;
	padding: 2em 0;
	max-width: 860px;
	width: 100%;
	text-align: left;
	font-size: 2.5em;
}

.simform .submit {
	display: none;
}

/* Question list style */
.simform ol {
	margin: 0;
	padding: 0;
	list-style: none;
	position: relative;
	-webkit-transition: height 0.4s;
	transition: height 0.4s;
}

.simform ol:before {
	content: '';
	background-color: rgba(0,0,0,0.1);
	position: absolute;
	left: 0;
	bottom: 0;
	width: 100%;
	height: 2.35em;
}

.questions li {
	z-index: 100;
	position: relative;
	visibility: hidden;
	height: 0;
	-webkit-transition: visibility 0s 0.4s, height 0s 0.4s;
	transition: visibility 0s 0.4s, height 0s 0.4s;
}

.questions li.current,
.no-js .questions li {
	visibility: visible;
	height: auto;
	-webkit-transition: none;
	transition: none;
}

/* Labels */
.questions li > span {
	display: block;
	overflow: hidden;
}

.questions li > span label {
	display: block;
	-webkit-transition: -webkit-transform 0.4s;
	transition: transform 0.4s;
	-webkit-transform: translateY(-100%);
	transform: translateY(-100%);
}

.questions li.current > span label,
.no-js .questions li > span label {
	-webkit-transition: none;
	transition: none;
	-webkit-transform: translateY(0);
	transform: translateY(0);
}

.show-next .questions li.current > span label {
	-webkit-animation: moveUpFromDown 0.4s both;
	animation: moveUpFromDown 0.4s both;
}

@-webkit-keyframes moveUpFromDown {
	from { -webkit-transform: translateY(100%); }
	to { -webkit-transform: translateY(0); }
}

@keyframes moveUpFromDown {
	from { -webkit-transform: translateY(100%); transform: translateY(100%); }
	to { -webkit-transform: translateY(0); transform: translateY(0); }
}

/* Input field */
.questions input {
	display: block;
	margin: 0 0 0 0;
	padding: 0.5em 1em 0.5em 0.9em;
	width: calc(100% - 0em);
	border: none;
	background: transparent;
	color: rgba(0,0,0,0.8);
	font-size: 1em;
	line-height: 1;
	opacity: 0;
	-webkit-transition: opacity 0.3s;
	transition: opacity 0.3s;
}

.questions .current input,
.no-js .questions input {
	opacity: 1;
}

.questions input:focus,
.simform button:focus {
	outline: none;
}

/* Next question button */
.next {
	position: absolute;
	right: -2.5em;
	bottom: 1.5em; /* padding-bottom of form plus progress bar height */
	display: block;
	padding: 0;
	width: 2em;
	height: 3em;
	border: none;
	background: none;
	color: #e02b20;
	text-align: center;
	opacity: 0;
	z-index: 100;
	cursor: pointer;
	-webkit-transition: -webkit-transform 0.3s, opacity 0.3s;
	transition: transform 0.3s, opacity 0.3s;
	-webkit-transform: translateX(-20%);
	transform: translateX(-20%);
	pointer-events: none;
	-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

.next:hover {
	color: rgba(0,0,0,0.5);
}

.next::after {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	content: "\e600";
  content: "\f061";
	text-transform: none;
	font-weight: normal;
	font-style: normal;
	font-variant: normal;
	font-family: 'FontAwesome';
	line-height: 2;
	speak: none;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

.next.show {
	opacity: 1;
	-webkit-transform: translateX(0);
	transform: translateX(0);
	pointer-events: auto;
}

/* Progress bar */
.simform .progress {
	width: 0%;
	height: 0.15em;
	background: rgba(0,0,0,0.3);
	-webkit-transition: width 0.4s ease-in-out;
	transition: width 0.4s ease-in-out;
}

.simform .progress::before {
	position: absolute;
	top: auto;
	width: 100%;
	height: inherit;
	background: rgba(0,0,0,0.05);
	content: '';
}

/* Number indicator */
.simform .number {
	position: absolute;
	right: 0;
	overflow: hidden;
	margin: 0.4em 0;
	width: 3em;
	font-weight: 700;
	font-size: 0.4em;
}

.simform .number:after {
	position: absolute;
	left: 50%;
	content: '/';
	opacity: 0.4;
	-webkit-transform: translateX(-50%);
	transform: translateX(-50%);
}

.simform .number span {
	float: right;
	width: 40%;
	text-align: center;
}

.simform .number .number-current {
	float: left;
}

.simform .number-next {
	position: absolute;
	left: 0;
}

.simform.show-next .number-current {
	-webkit-transition: -webkit-transform 0.4s;
	transition: transform 0.4s;
	-webkit-transform: translateY(-100%);
	transform: translateY(-100%);
}

.simform.show-next .number-next {
	-webkit-animation: moveUpFromDown 0.4s both;
	animation: moveUpFromDown 0.4s both;
}

/* Error and final message */
.simform .error-message,
.simform .final-message {
	position: absolute;
	visibility: hidden;
	opacity: 0;
	-webkit-transition: opacity 0.4s;
	transition: opacity 0.4s;
}

.simform .error-message {
	padding: 0.4em 3.5em 0 0;
	width: 100%;
	color: rgba(0,0,0,0.7);
	font-style: italic;
	font-size: 0.4em;
}

.final-message {
	top: 50%;
	left: 0;
	padding: 0.5em;
	width: 100%;
	text-align: center;
	-webkit-transform: translateY(-50%);
	transform: translateY(-50%);
}

.error-message.show,
.final-message.show {
	visibility: visible;
	opacity: 1;
}

.final-message.show {
	-webkit-transition-delay: 0.5s;
	transition-delay: 0.5s;
}

/* Final hiding of form / showing message */
.simform-inner.hide {
	visibility: hidden;
	opacity: 0;
	-webkit-transition: opacity 0.3s, visibility 0s 0.3s;
	transition: opacity 0.3s, visibility 0s 0.3s;
}

/* No JS Fallback */
.no-js .simform {
	font-size: 1.75em;
}

.no-js .questions li {
	padding: 0 0 2em;
}

.no-js .simform .submit {
	display: block;
	float: right;
	padding: 10px 20px;
	border: none;
	background: rgba(0,0,0,0.3);
	color: rgba(0,0,0,0.4);
}

.no-js .simform .controls {
	display: none;
}

/* Remove IE clear cross */
input[type=text]::-ms-clear {
    display: none;
}

/* Adjust form for smaller screens */
@media screen and (max-width: 44.75em) {
	.simform {
		font-size: 1.8em;
	}
}

@media screen and (max-width: 33.5625em) {
	.simform {
		font-size: 1.2em;
	}
}

button, html input[type="button"], input[type="reset"], input[type="submit"] {
    -webkit-appearance: button;
    cursor: pointer;
}

button, input {
    line-height: normal;
}

button, select {
    text-transform: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: 100%;
    margin: 0;
}
              
            
!

JS

              
                console.clear();

// classie.js

/*!
 * classie - class helper functions
 * from bonzo https://github.com/ded/bonzo
 * 
 * classie.has( elem, 'my-class' ) -> true/false
 * classie.add( elem, 'my-new-class' )
 * classie.remove( elem, 'my-unwanted-class' )
 * classie.toggle( elem, 'my-class' )
 */

/*jshint browser: true, strict: true, undef: true */
/*global define: false */

( function( window ) {

'use strict';

// class helper functions from bonzo https://github.com/ded/bonzo

function classReg( className ) {
  return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
}

// classList support for class management
// altho to be fair, the api sucks because it won't accept multiple classes at once
var hasClass, addClass, removeClass;

if ( 'classList' in document.documentElement ) {
  hasClass = function( elem, c ) {
    return elem.classList.contains( c );
  };
  addClass = function( elem, c ) {
    elem.classList.add( c );
  };
  removeClass = function( elem, c ) {
    elem.classList.remove( c );
  };
}
else {
  hasClass = function( elem, c ) {
    return classReg( c ).test( elem.className );
  };
  addClass = function( elem, c ) {
    if ( !hasClass( elem, c ) ) {
      elem.className = elem.className + ' ' + c;
    }
  };
  removeClass = function( elem, c ) {
    elem.className = elem.className.replace( classReg( c ), ' ' );
  };
}

function toggleClass( elem, c ) {
  var fn = hasClass( elem, c ) ? removeClass : addClass;
  fn( elem, c );
}

var classie = {
  // full names
  hasClass: hasClass,
  addClass: addClass,
  removeClass: removeClass,
  toggleClass: toggleClass,
  // short names
  has: hasClass,
  add: addClass,
  remove: removeClass,
  toggle: toggleClass
};

// transport
if ( typeof define === 'function' && define.amd ) {
  // AMD
  define( classie );
} else {
  // browser global
  window.classie = classie;
}

})( window );


/*! modernizr 3.6.0 (Custom Build) | MIT *
 * https://modernizr.com/download/?-addtest-atrule-domprefixes-hasevent-mq-prefixed-prefixedcss-prefixedcssvalue-prefixes-setclasses-testallprops-testprop-teststyles !*/
!function(e,n,t){function r(e){var n=x.className,t=Modernizr._config.classPrefix||"";if(b&&(n=n.baseVal),Modernizr._config.enableJSClass){var r=new RegExp("(^|\\s)"+t+"no-js(\\s|$)");n=n.replace(r,"$1"+t+"js$2")}Modernizr._config.enableClasses&&(n+=" "+t+e.join(" "+t),b?x.className.baseVal=n:x.className=n)}function o(e,n){return typeof e===n}function i(){var e,n,t,r,i,s,u;for(var a in S)if(S.hasOwnProperty(a)){if(e=[],n=S[a],n.name&&(e.push(n.name.toLowerCase()),n.options&&n.options.aliases&&n.options.aliases.length))for(t=0;t<n.options.aliases.length;t++)e.push(n.options.aliases[t].toLowerCase());for(r=o(n.fn,"function")?n.fn():n.fn,i=0;i<e.length;i++)s=e[i],u=s.split("."),1===u.length?Modernizr[u[0]]=r:(!Modernizr[u[0]]||Modernizr[u[0]]instanceof Boolean||(Modernizr[u[0]]=new Boolean(Modernizr[u[0]])),Modernizr[u[0]][u[1]]=r),_.push((r?"":"no-")+u.join("-"))}}function s(e,n){if("object"==typeof e)for(var t in e)T(e,t)&&s(t,e[t]);else{e=e.toLowerCase();var o=e.split("."),i=Modernizr[o[0]];if(2==o.length&&(i=i[o[1]]),"undefined"!=typeof i)return Modernizr;n="function"==typeof n?n():n,1==o.length?Modernizr[o[0]]=n:(!Modernizr[o[0]]||Modernizr[o[0]]instanceof Boolean||(Modernizr[o[0]]=new Boolean(Modernizr[o[0]])),Modernizr[o[0]][o[1]]=n),r([(n&&0!=n?"":"no-")+o.join("-")]),Modernizr._trigger(e,n)}return Modernizr}function u(e){return e.replace(/([a-z])-([a-z])/g,function(e,n,t){return n+t.toUpperCase()}).replace(/^-/,"")}function a(){return"function"!=typeof n.createElement?n.createElement(arguments[0]):b?n.createElementNS.call(n,"http://www.w3.org/2000/svg",arguments[0]):n.createElement.apply(n,arguments)}function l(e){return e.replace(/([A-Z])/g,function(e,n){return"-"+n.toLowerCase()}).replace(/^ms-/,"-ms-")}function f(){var e=n.body;return e||(e=a(b?"svg":"body"),e.fake=!0),e}function c(e,t,r,o){var i,s,u,l,c="modernizr",p=a("div"),d=f();if(parseInt(r,10))for(;r--;)u=a("div"),u.id=o?o[r]:c+(r+1),p.appendChild(u);return i=a("style"),i.type="text/css",i.id="s"+c,(d.fake?d:p).appendChild(i),d.appendChild(p),i.styleSheet?i.styleSheet.cssText=e:i.appendChild(n.createTextNode(e)),p.id=c,d.fake&&(d.style.background="",d.style.overflow="hidden",l=x.style.overflow,x.style.overflow="hidden",x.appendChild(d)),s=t(p,e),d.fake?(d.parentNode.removeChild(d),x.style.overflow=l,x.offsetHeight):p.parentNode.removeChild(p),!!s}function p(e,n){return!!~(""+e).indexOf(n)}function d(e,n){return function(){return e.apply(n,arguments)}}function v(e,n,t){var r;for(var i in e)if(e[i]in n)return t===!1?e[i]:(r=n[e[i]],o(r,"function")?d(r,t||n):r);return!1}function m(n,t,r){var o;if("getComputedStyle"in e){o=getComputedStyle.call(e,n,t);var i=e.console;if(null!==o)r&&(o=o.getPropertyValue(r));else if(i){var s=i.error?"error":"log";i[s].call(i,"getComputedStyle returning null, its possible modernizr test results are inaccurate")}}else o=!t&&n.currentStyle&&n.currentStyle[r];return o}function h(n,r){var o=n.length;if("CSS"in e&&"supports"in e.CSS){for(;o--;)if(e.CSS.supports(l(n[o]),r))return!0;return!1}if("CSSSupportsRule"in e){for(var i=[];o--;)i.push("("+l(n[o])+":"+r+")");return i=i.join(" or "),c("@supports ("+i+") { #modernizr { position: absolute; 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// stepsForm.js
/**
 * stepsForm.js v1.0.0
 * http://www.codrops.com
 *
 * Licensed under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * Copyright 2014, Codrops
 * http://www.codrops.com
 */
;( function( window ) {
	
	'use strict';

	var transEndEventNames = {
			'WebkitTransition': 'webkitTransitionEnd',
			'MozTransition': 'transitionend',
			'OTransition': 'oTransitionEnd',
			'msTransition': 'MSTransitionEnd',
			'transition': 'transitionend'
		},
		transEndEventName = transEndEventNames[ Modernizr.prefixed( 'transition' ) ],
		support = { transitions : Modernizr.csstransitions };

	function extend( a, b ) {
		for( var key in b ) { 
			if( b.hasOwnProperty( key ) ) {
				a[key] = b[key];
			}
		}
		return a;
	}

	function stepsForm( el, options ) {
		this.el = el;
		this.options = extend( {}, this.options );
  		extend( this.options, options );
  		this._init();
	}

	stepsForm.prototype.options = {
		onSubmit : function() { return false; }
	};

	stepsForm.prototype._init = function() {
		// current question
		this.current = 0;

		// questions
		this.questions = [].slice.call( this.el.querySelectorAll( 'ol.questions > li' ) );
		// total questions
		this.questionsCount = this.questions.length;
		// show first question
		classie.addClass( this.questions[0], 'current' );
		
		// next question control
		this.ctrlNext = this.el.querySelector( 'button.next' );

		// progress bar
		this.progress = this.el.querySelector( 'div.progress' );
		
		// question number status
		this.questionStatus = this.el.querySelector( 'span.number' );
		// current question placeholder
		this.currentNum = this.questionStatus.querySelector( 'span.number-current' );
		this.currentNum.innerHTML = Number( this.current + 1 );
		// total questions placeholder
		this.totalQuestionNum = this.questionStatus.querySelector( 'span.number-total' );
		this.totalQuestionNum.innerHTML = this.questionsCount;

		// error message
		this.error = this.el.querySelector( 'span.error-message' );
		
		// init events
		this._initEvents();
	};

	stepsForm.prototype._initEvents = function() {
		var self = this,
			// first input
			firstElInput = this.questions[ this.current ].querySelector( 'input' ),
			// focus
			onFocusStartFn = function() {
				firstElInput.removeEventListener( 'focus', onFocusStartFn );
				classie.addClass( self.ctrlNext, 'show' );
			};

		// show the next question control first time the input gets focused
		firstElInput.addEventListener( 'focus', onFocusStartFn );

		// show next question
		this.ctrlNext.addEventListener( 'click', function( ev ) { 
			ev.preventDefault();
			self._nextQuestion(); 
		} );

		// pressing enter will jump to next question
		document.addEventListener( 'keydown', function( ev ) {
			var keyCode = ev.keyCode || ev.which;
			// enter
			if( keyCode === 13 ) {
				ev.preventDefault();
				self._nextQuestion();
			}
		} );

		// disable tab
		this.el.addEventListener( 'keydown', function( ev ) {
			var keyCode = ev.keyCode || ev.which;
			// tab
			if( keyCode === 9 ) {
				ev.preventDefault();
			} 
		} );
	};

	stepsForm.prototype._nextQuestion = function() {
    
		if( !this._validade() ) {
			return false;
		}

		// check if form is filled
		if( this.current === this.questionsCount - 1 ) {
			this.isFilled = true;
		}

		// clear any previous error messages
		this._clearError();

		// current question
		var currentQuestion = this.questions[ this.current ];

		// increment current question iterator
		++this.current;

		// update progress bar
		this._progress();

		if( !this.isFilled ) {
			// change the current question number/status
			this._updateQuestionNumber();

			// add class "show-next" to form element (start animations)
			classie.addClass( this.el, 'show-next' );

			// remove class "current" from current question and add it to the next one
			// current question
			var nextQuestion = this.questions[ this.current ];
			classie.removeClass( currentQuestion, 'current' );
			classie.addClass( nextQuestion, 'current' );
		}

		// after animation ends, remove class "show-next" from form element and change current question placeholder
		var self = this,
			onEndTransitionFn = function( ev ) {
				if( support.transitions ) {
					this.removeEventListener( transEndEventName, onEndTransitionFn );
				}
				if( self.isFilled ) {
					self._submit();
				}
				else {
					classie.removeClass( self.el, 'show-next' );
					self.currentNum.innerHTML = self.nextQuestionNum.innerHTML;
					self.questionStatus.removeChild( self.nextQuestionNum );
					// force the focus on the next input
					nextQuestion.querySelector( 'input' ).focus();
				}
			};

		if( support.transitions ) {
			this.progress.addEventListener( transEndEventName, onEndTransitionFn );
		}
		else {
			onEndTransitionFn();
		}
	}

	// updates the progress bar by setting its width
	stepsForm.prototype._progress = function() {
		this.progress.style.width = this.current * ( 100 / this.questionsCount ) + '%';
	}

	// changes the current question number
	stepsForm.prototype._updateQuestionNumber = function() {
		// first, create next question number placeholder
		this.nextQuestionNum = document.createElement( 'span' );
		this.nextQuestionNum.className = 'number-next';
		this.nextQuestionNum.innerHTML = Number( this.current + 1 );
		// insert it in the DOM
		this.questionStatus.appendChild( this.nextQuestionNum );
	}

	// submits the form
	stepsForm.prototype._submit = function() {
    console.log("submit");
		this.options.onSubmit( this.el );
    
	}

	// TODO (next version..)
	// the validation function
	stepsForm.prototype._validade = function() {
		// current question´s input
		var input = this.questions[ this.current ].querySelector( 'input' ).value;
		if( input === '' ) {
			this._showError( 'EMPTYSTR' );
			return false;
		}

		return true;
	}

	// TODO (next version..)
	stepsForm.prototype._showError = function( err ) {
		var message = '';
		switch( err ) {
			case 'EMPTYSTR' : 
				message = 'Please fill the field before continuing';
				break;
			case 'INVALIDEMAIL' : 
				message = 'Please fill a valid email address';
				break;
			// ...
		};
		this.error.innerHTML = message;
		classie.addClass( this.error, 'show' );
	}

	// clears/hides the current error message
	stepsForm.prototype._clearError = function() {
		classie.removeClass( this.error, 'show' );
	}

	// add to global namespace
	window.stepsForm = stepsForm;

})( window );

var theForm = document.getElementById("theForm");

new stepsForm(theForm, {
  onSubmit: function(form) {
    // hide form
    classie.addClass(theForm.querySelector(".simform-inner"), "hide");

    /*
					form.submit()
					or
					AJAX request (maybe show loading indicator while we don't have an answer..)
		*/
    
    Email.send({
    	SecureToken : "fbd942ff-7e0b-481c-9a3f-6166844b5f8b",
    	To : 'luish.exist@gmail.com',
    	From : "luish.exist@gmail.com",
    	Subject : "Received Form",
    	Body : "This is the content the form received:\n Question#1:" 
      + document.getElementById('q1').value 
      + "\n Question #2:" 
      + document.getElementById('q2').value 
      + "\n Question #3:" 
      + document.getElementById('q3').value
		}).then(
  		message => alert("Form Sent")
		);

    // let's just simulate something...
    var messageEl = theForm.querySelector(".final-message");
    messageEl.innerHTML = "Thank you for your time.";
    classie.addClass(messageEl, "show");
  }
});
              
            
!
999px

Console