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HTML 

              
                <div class="wrapper">

  <div class="notifications">

    <div class="notifications__item">
      <div class="notifications__item__avatar">
        <img src="https://github.com/Flat-Pixels/Notifications-card-animation/raw/master/img/avatar_1.jpg" />
      </div>

      <div class="notifications__item__content">
        <span class="notifications__item__title">Verdieu Steeve</span>
        <span class="notifications__item__message">Just started following you</span>
      </div>

      <div>
        <div class="notifications__item__option archive js-option">
          <i class="fas fa-folder"></i>
        </div>
        <div class="notifications__item__option delete js-option">
          <i class="fas fa-trash"></i>
        </div>
      </div>
    </div>

    <div class="notifications__item">
      <div class="notifications__item__avatar">
        <img src="https://github.com/Flat-Pixels/Notifications-card-animation/raw/master/img/avatar_2.jpg" />
      </div>

      <div class="notifications__item__content">
        <span class="notifications__item__title">Mikes Miles</span>
        <span class="notifications__item__message">Just liked your video story</span>
      </div>

      <div>
        <div class="notifications__item__option archive js-option">
          <i class="fas fa-folder"></i>
        </div>
        <div class="notifications__item__option delete js-option">
          <i class="fas fa-trash"></i>
        </div>
      </div>
    </div>


    <div class="notifications__item">
      <div class="notifications__item__avatar">
        <img src="https://github.com/Flat-Pixels/Notifications-card-animation/raw/master/img/avatar_3.jpg" />
      </div>

      <div class="notifications__item__content">
        <span class="notifications__item__title">Helen Saga</span>
        <span class="notifications__item__message">Added you to a todos list for tomorrow</span>
      </div>

      <div>
        <div class="notifications__item__option archive js-option">
          <i class="fas fa-folder"></i>
        </div>
        <div class="notifications__item__option delete js-option">
          <i class="fas fa-trash"></i>
        </div>
      </div>
    </div>

    <div class="notifications__item">
      <div class="notifications__item__avatar">
        <img src="https://github.com/Flat-Pixels/Notifications-card-animation/raw/master/img/avatar_4.jpg" />
      </div>

      <div class="notifications__item__content">
        <span class="notifications__item__title">Sarah Sharp</span>
        <span class="notifications__item__message">Just commented on your last post</span>
      </div>

      <div>
        <div class="notifications__item__option archive js-option">
          <i class="fas fa-folder"></i>
        </div>
        <div class="notifications__item__option delete js-option">
          <i class="fas fa-trash"></i>
        </div>
      </div>
    </div>

    <div class="notifications__item">
      <div class="notifications__item__avatar">
        <img src="https://github.com/Flat-Pixels/Notifications-card-animation/raw/master/img/avatar_5.jpg" />
      </div>

      <div class="notifications__item__content">
        <span class="notifications__item__title">John Lee</span>
        <span class="notifications__item__message">Just started following you</span>
      </div>

      <div>
        <div class="notifications__item__option archive js-option">
          <i class="fas fa-folder"></i>
        </div>
        <div class="notifications__item__option delete js-option">
          <i class="fas fa-trash"></i>
        </div>
      </div>
    </div>
  </div>
</div>
!

CSS 

              
                /**
 * Don't need this because
 * .woff is not accessible from cross domain
 */
@font-face {
    font-family: 'atvice';
    src: url('https://github.com/Flat-Pixels/Notifications-card-animation/raw/master/fonts/atvice-webfont.woff') format('woff2'),
         url('https://github.com/Flat-Pixels/Notifications-card-animation/raw/master/fonts/atvice-webfont.woff2') format('woff');
    font-weight: normal;
    font-style: normal;
}


* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;

  background-color: #c9463d;
  color: black;
}

.wrapper {
  width: 480px;
  margin: 50px auto;
}


.notifications__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 105px;
  margin-bottom: 20px;
  padding: 0 20px;

  background-color: white;
  border-radius: 5px;
  box-shadow: 0px 15px 20px 0px rgb( 0, 0, 0, .2 );

  transition: all .3s ease-in;
  cursor: pointer;
}

.notifications__item__avatar {
  width: 75px;
  height: 75px;
  overflow: hidden;
  margin-right: 20px;

  border-radius: 50%;
}

.notifications__item__avatar img {
  width: 100%;
  height: 100%;
}

.notifications__item__content { width: calc( 100% - 105px ); }
.notifications__item__title,
.notifications__item__message { display: block; }

.notifications__item__title {
  letter-spacing: 2px;
  font-family: 'atvice', sans-serif;
  font-size: 17px;
}

.notifications__item__message {
  font-family: Roboto, sans-serif;
  font-size: 14px;
  color: #929292;
}

.notifications__item__option {
  width: 20px;
  height: 20px;
  margin: 8px 0;

  border-radius: 50%;
  color: white;
  opacity: 0;

  font-size: 10px;
  text-align: center;
  line-height: 20px;

  cursor: pointer;
  transition: all .2s;
}

.notifications__item__option.archive { background-color: #3dc98c; }

.notifications__item__option.delete { background-color: #c93d4d; }


/*
* Animation part
*/
.notifications__item:hover {
  background-color: #f7f7f7;
  transform: scale( 0.95 );
  box-shadow: 0px 5px 10px 0px rgb( 0, 0, 0, .2 );
}

.notifications__item:hover .notifications__item__option { opacity: 1; }

.notifications__item.archive .notifications__item__title,
.notifications__item.delete .notifications__item__title {
  color: white;
}

.notifications__item.archive .notifications__item__message,
.notifications__item.delete .notifications__item__message {
  color: #f3f3f3;
}

.notifications__item.archive {
  background-color: #3dc98c;
  animation: archiveAnimation 1.5s cubic-bezier(0, 0, 0, 1.12) forwards;
  animation-delay: .6s;
}

.notifications__item.delete {
  background-color: #c93d4d;
  animation: deleteAnimation 1.5s cubic-bezier(0, 0, 0, 1.12) forwards;
  animation-delay: .6s;
}


@keyframes archiveAnimation{
  to {
    transform: translateX( 100px );
    opacity: 0;
  }
}

@keyframes deleteAnimation{
  to {
    transform: translateX( -100px );
    opacity: 0;
  }
}
!

JS 

              
                (function(){

  /*
  * Get all the buttons actions
  */
  let optionBtns = document.querySelectorAll( '.js-option' );

  for(var i = 0; i < optionBtns.length; i++ ) {

    /*
    * When click to a button
    */
    optionBtns[i].addEventListener( 'click', function ( e ){

      var notificationCard = this.parentNode.parentNode;
      var clickBtn = this;
      /*
      * Execute the delete or Archive animation
      */
      requestAnimationFrame( function(){ 

        archiveOrDelete( clickBtn, notificationCard );

        /*
        * Add transition
        * That smoothly remove the blank space
        * Leaves by the deleted notification card
        */
        window.setTimeout( function( ){
          requestAnimationFrame( function() {
            notificationCard.style.transition = 'all .4s ease';
            notificationCard.style.height = 0;
            notificationCard.style.margin = 0;
            notificationCard.style.padding = 0;
          });

          /*
          * Delete definitely the animation card
          */
          window.setTimeout( function( ){
            notificationCard.parentNode.removeChild( notificationCard );
          }, 1500 );
        }, 1500 );
      });
    })
  }

  /*
  * Function that adds
  * delete or archive class
  * To a notification card
  */
  var archiveOrDelete = function( clickBtn, notificationCard ){
    if( clickBtn.classList.contains( 'archive' ) ){
      notificationCard.classList.add( 'archive' );
    } else if( clickBtn.classList.contains( 'delete' ) ){
      notificationCard.classList.add( 'delete' );
    }
  }

})()
!
999px

Console