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HTML 

              
                <div class="container">
  <div class="item">
    <div class="menu-con">
      <div class="menu-item">
        <div class="fa fa-file"></div>Dashboard</div>
      <div class="menu-item">
        <div class="fa fa-user"></div>Profile</div>
      <div class="menu-item">
        <div class="fa fa-bell"></div>Notifications</div>
      <div class="menu-item">
        <div class="fa fa-comments"></div>Messages</div>
      <div class="menu-item">
        <div class="fa fa-cog"></div>Settings</div>
    </div>
    <div class="card-con">
      <div class="header">
        <div class="header-icon"><i class="fa fa-equals"></i></div>
        <div class="header-title">Notifications</div>
        <div class="search-icon"><i class="fa fa-search"></i></div>
      </div>
      <div class="card-body">
        <div class="line"></div>
        <div class="news one">
          <div class="circle"></div>
          <div class="text-con">
            <div class="time">9:24 AM</div>
            <div class="description">
              <b>John Walker</b> posted a photo on your wall.
            </div>
          </div>
        </div>
        <div class="news two">
          <div class="circle"></div>
          <div class="text-con">
            <div class="time">9:24 AM</div>
            <div class="description">
              <b>John Walker</b> posted a photo on your wall.
            </div>
          </div>
        </div>
        <div class="news three">
          <div class="circle"></div>
          <div class="text-con">
            <div class="time">9:24 AM</div>
            <div class="description">
              <b>Donald Pen</b>  added you as friend.
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>

<div class="signature">
  <a href="https://twitter.com/its_sheyii" target='_blank'>Created by Seyi Oluwadare</a>
</div>
!

CSS 

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

body {
  margin: 0;
  padding: 0;
  font-family: "Open Sans", sans-serif;
  font-size: 14px;
  overflow: hidden;
}

.container {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to top, #264057 0%, #b2daff 100%);
  width: 400px;
  height: 400px;
  border-radius: 5px;
  box-shadow: 4px 8px 16px 0 rgba(0, 0, 0, 0.3);
  
  .menu-active {
    transform: translateX(-60px);
  }
  
  .card-active {
    transform: translateX(130px);
  }

  .menu-con {
    height: 270px;
    width: 200px;
    position: absolute;
    // top: 60px;
    background: #43627d;
    color: #93b2cd;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    padding: 0 10px;
    transition: all 0.3s ease-in-out;
    box-shadow: 4px 8px 12px 0 rgba(0, 0, 0, 0.3);

    .menu-item {
      cursor: pointer;
      transition: color 0.3s ease-in-out;
      &:hover {
        color: #ffffff;
      }
    }
    .fa {
      padding: 0 10px;
    }
  } //menu-con

  .card-con {
    display: flex;
    flex-direction: column;
    width: 300px;
    height: 320px;
    transition: all 0.3s ease-in-out;

    box-shadow: 4px 8px 12px 0 rgba(0, 0, 0, 0.3);

    .header {
      display: flex;
      justify-content: space-around;
      align-items: center;
      position: relative;
      color: white;
      background: #5f98cd;
      height: 90px;
      &-title {
        font-weight: bold;
        font-size: 16px;
      }
      .header-icon,
      .search-icon {
        cursor: pointer;
      }
    }
    .card-body {
      position: relative;
      background: #ffffff;
      height: 400px;
      .line {
        height: 260px;
        position: absolute;
        width: 4px;
        left: 27px;
        background-color: #ebebeb;
      }
      .news {
        position: relative;
        display: flex;
        flex-direction: column;
        left: 22px;
        opacity: 1;
        
        .circle {
          border-radius: 50%;
          border: 2px solid #5f98cd;
          height: 10px;
          width: 10px;
          background: white;
          box-shadow: 0 0 0 4px white;
        }

        .text-con {
          margin: 0 20px;
          margin-top: -15px;
          width: 240px;
          color: #707070;
          font-size: 15px;
          cursor: pointer;
          &:hover {
            color: #5f98cd;
          }
          .time {
            font-size: 12px;
          }
          .description {
            margin-bottom: 8px;
          }
        } // text-con
      }
    } //card-body
  } //card-con
}

.one {
  top: 20px;
  animation: slide 1s ease-in-out;
}

.two {
  top: 45px;
  animation: slideTwo 1s ease-in-out;
}

.three {
  top: 70px;
  animation: slideThree 1s ease-in-out;
}

@keyframes slide {
  0% {
    opacity: 0;
    top: 60px;
  }
  
  40%, 100% {
    opacity: 1;
  }
}

@keyframes slideTwo {
  0%, 30% {
    opacity: 0;
    top: 80px;
  }
  
  70%, 100% {
    opacity: 1;
  }
}

@keyframes slideThree {
  0%, 60% {
    opacity: 0;
    top: 100px;
  }
  
  100% {
    opacity: 1;
  }
}

.signature {
  font-size: 14px;
  position: absolute;
  bottom: 10px;
  right: 10px;
  font-weight: bold;
  font-style: italic;
  cursor: pointer;
  a {
    text-decoration: none;
    color: #000000;
  }
}
!

JS 

              
                const headerIcon = document.querySelector(".header-icon");
const card = document.querySelector(".card-con");
const menu = document.querySelector(".menu-con");


headerIcon.addEventListener("click", () => {
  card.classList.toggle('card-active');
  menu.classList.toggle('menu-active');
});
!
999px

Console