<div id="tabs">
  <ul id="accordion">
    <li>
      <a class="active" href="#tabs-1">   <div class="tag">
          <div class="icon">
            <div class="block">
              <div class="circle"></div>
            </div>
          </div>
          <span class="title">Feature One</span>
        </div>
      </a>
        <div class="addon fadein">
          <span>
            Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s.
          </span>
          <a class="para-a" href="#">Learn More</a>
        </div>
    </li>
    <li>
      <a href="#tabs-2">   <div class="tag">
          <div class="icon">
            <div class="block">
              <div class="circle"></div>
            </div>
          </div>
          <span class="title">Feature Two</span>
        </div>
      </a>
        <div class="addon">
          <span>
            Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s.
          </span>
          <a class="para-a" href="#">Learn More</a>
        </div>
    </li>
    <li>
      <a href="#tabs-3">   <div class="tag">
          <div class="icon">
            <div class="block">
              <div class="circle"></div>
            </div>
          </div>
          <span class="title">Feature Three</span>
        </div>
      </a>
        <div class="addon">
          <span>
            Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s.
          </span>
          <a class="para-a" href="#">Learn More</a>
        </div>
    </li>
  </ul>
  <div class="browser">
    <div class="top-bar">
      <div class="dot"></div>
      <div class="dot"></div>
      <div class="dot"></div>
    </div>
    <div id="tabs-1"></div>
    <div id="tabs-2"></div>
    <div id="tabs-3"></div>
  </div>
</div>

@import url('https://fonts.googleapis.com/css?family=Open Sans:400,700|Montserrat');

body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat';
  font-size: 13px;
  letter-spacing: 1px;
}

#tabs {
  width: 700px;
  display: flex;
  position: relative;
  margin: 0 auto;
  margin-top: 50px;
  height: auto;
  min-height: 200px;
  max-height: 600px;
  overflow: hidden;
}

ul {
  position: relative;
  display: inline-block;
  margin: 0;
  padding: 0;
  list-style-type: none;
  vertical-align: top;
  width: 50%;
}

ul li a {
  position: relative;
  display: block;
  width: 100%;
  text-decoration: none;
  color: #3b3b3b;
  border-top: solid 2px #e9e9e9;
  padding: 20px 5px;
  z-index: 1;
  opacity: .5;
  -webkit-transition: 0.3s ease;
  -moz-transition: 0.3s ease;
  -o-transition: 0.3s ease;
  transition: 0.3s ease;
}

ul li:focus, a:focus {
  outline: none;
}

ul li:nth-child(1) a {
  border-top: none;
}

ul li a.active {
  opacity: 1;
}

.para-a {
  font-weight: bold;
  margin-top: 10px;
  padding: 0;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 1px;
  border: none;
  font-family: 'Montserrat';
  color: #2b2b2b;
}

.tag {
  position: relative;
  width: 100%;
}

.icon {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 50px;
  background: #c7c7c7;
  border-radius: 100%;
  vertical-align: middle;
}

.block {
  position: absolute;
  width: 18px;
  height: 18px;
  vertical-align: middle;
  border: solid 2px #7b7b7b;
  border-radius: 5px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

.circle {
  position: absolute;
  padding: 2px;
  border: solid 2px #7b7b7b;
  border-radius: 100%;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

.title {
  display: inline-block;
  text-transform: uppercase;
  font-weight: bold;
  padding: 0 10px;
  vertical-align: middle;
  color: #7b7b7b;
}

.addon {
  position: relative;
  width: 80%;
  top: -25px;
  margin-left: 70px;
  letter-spacing: 0;
  font-size: 13px;
  color: #9b9b9b;
  opacity: 0;
  font-family: 'Open Sans';
}

.addon.fadein {
  opacity: 1;
}

.browser {
  width: 45%;
  height: 95%;
  position: absolute;
  border-style: solid;
  border-width: 2px 0 2px 2px;
  border-color: #7b7b7b transparent #7b7b7b #7b7b7b;
  right: 0;
  border-radius: 10px 0 0 10px;
  overflow: hidden;
}

.top-bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 20px;
  line-height: 20px;
  background: #fff;
  border-bottom: solid 2px #7b7b7b;
  z-index: 2;
}

.dot {
  position: relative;
  display: inline-block;
  padding: 4px;
  background: #c7c7c7;
  border-radius: 100%;
}

.dot:nth-child(1) {
  margin-left: 7px;
}

#tabs-1, #tabs-2, #tabs-3 {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
}

#tabs-1 {
  background: #9b9b9b;
}

#tabs-2 {
  background: #c9c9c9;
}

#tabs-3 {
  background: #1b1b1b;
}

$(function() {
  $("#tabs").tabs({
    show: { effect: "blind", direction: "right", duration: 300 }
  });
  $( "#accordion" ).accordion();

  var btn = $('#accordion li a');
  var wrapper = $('#accordion li');

  $(btn).on('click', function() {
    $(btn).removeClass('active');
    $(btn).parent().find('.addon').removeClass('fadein');
    
    $(this).addClass('active');
    $(this).parent().find('.addon').addClass('fadein');
  });
});