<div class="wrapper">
  <div class="item">
    I am an element
    
    <div class="close"></div>
  </div>

  <div class="item">
    I am an element
    
    <div class="close"></div>
  </div>

  <div class="item">
    I am an element
    
    <div class="close"></div>
  </div>

  <div class="item last">
    I am an element
    
    <div class="close"></div>
  </div>
</div>

@import url(https://fonts.googleapis.com/css?family=Lato);

body{
  background-color: rgb(230, 230, 233);
  font-family: 'Lato', sans-serif;
}

.wrapper{
  width: 400px;
  margin: 0 auto;
  padding: 40px 0;
  
  &.active{
    .item{
      background-color: rgb(240, 240, 240);
      
      &.active{
        background-color: #0083F5;
        color: white;
      }
    }
  }
}

.item{
  border-bottom: 1px solid fade(black, 10%);
  background-color: white;
  width: 400px;
  height: 50px;
  transition-duration: 0.5s;
  position: relative;
  
  padding-top: 30px;
  text-align: center;
  
  &:hover{
    cursor: pointer;
    background-color: rgb(245, 245, 245);
  }
  
  .close{
    display: none;
    width: 30px;
    height: 30px;
    border-radius: 15px;
    background-color: white;
    position: absolute;
    right: 20px;
    top: 50%;
    margin-top: -15px;
    box-shadow: 0 3px 2px fade(black, 20%);
    
    &:hover{
      box-shadow: 0 3px 2px fade(black, 40%);
      cursor: pointer;
      
      &:before{
        transform: rotate(-135deg);
        -webkit-transform: rotate(-135deg);
      }
      
      &:after{
        transform: rotate(135deg);
        -webkit-transform: rotate(135deg);
      }
    }
    
    &:before, &:after{
      width: 16px;
      height: 2px;
      border-radius: 2px;
      background-color: #0083F5;
      position: absolute;
      content: "";
      top: 14px;
      left:7px; 
      
      transition-duration: 0.33s;
    }
    
    &:before{
      -webkit-transform: rotate(45deg);
      transform: rotate(45deg);
    }
    
    &:after{
      -webkit-transform: rotate(-45deg);
      transform: rotate(-45deg);
    }
  }
  
  &.last{
    border-bottom: none;
  }

  &.margin{
    margin-bottom: 20px;
    margin-top: 20px;
  }
  
  &.active{
    box-shadow: 0px 5px 10px fade(black, 20%);
    border-bottom: none;
    color: black;
    
    transition-delay: 0.5s; 
    transform: scale(1.1, 1.1);
    
    -webkit-transition-delay: 0.5s; 
    -webkit-transform: scale(1.1, 1.1);
  }
}

$('.item').click(function (){
  $('.wrapper').addClass('active');
  $('.item').removeClass('active').removeClass('margin');
  $('.close').fadeOut(300);
  $(this).addClass('active').addClass('margin');
  $('.close', this).delay(700).fadeIn(300);
});

$('.close').click(function (event){
  event.stopPropagation();
  $('.wrapper').removeClass('active');
  $('.item').removeClass('active').removeClass('margin');
  $('.close').fadeOut(300);
});