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HTML 

              
                <div class="table_center">
       <div class="drop-down">
         <div id="dropDown" class="drop-down__button">
           <span class="drop-down__name">Account settings</span>
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         <div class="drop-down__menu-box">
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</svg></li>
             <li data-name="activity" class="drop-down__item">Recent activity  <svg version="1.1" class="drop-down__item-icon" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="95.103px" height="95.103px" viewBox="0 0 95.103 95.103" style="enable-background:new 0 0 95.103 95.103;" xml:space="preserve">
<g>
	<g id="Layer_1_14_">
		<g>
			<g>
				<g>
					<path d="M47.561,0C25.928,0,8.39,6.393,8.39,14.283v11.72c0,7.891,17.538,14.282,39.171,14.282       c21.632,0,39.17-6.392,39.17-14.282v-11.72C86.731,6.393,69.193,0,47.561,0z"></path>
				</g>
			</g>
			<g>
				<g>
					<path d="M47.561,47.115c-20.654,0-37.682-5.832-39.171-13.227c-0.071,0.353,0,19.355,0,19.355       c0,7.892,17.538,14.283,39.171,14.283c21.632,0,39.17-6.393,39.17-14.283c0,0,0.044-19.003-0.026-19.355       C85.214,41.284,68.214,47.115,47.561,47.115z"></path>
				</g>
			</g>
			<path d="M86.694,61.464c-1.488,7.391-18.479,13.226-39.133,13.226S9.875,68.854,8.386,61.464L8.39,80.82     c0,7.891,17.538,14.282,39.171,14.282c21.632,0,39.17-6.393,39.17-14.282L86.694,61.464z"></path>
		</g>
	</g>
</g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g><g></g>
<g></g><g></g><g></g><g></g>
</svg></li>
           </ul>
         </div>
       </div>
</div>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css?family=Raleway:100,100i,200,200i,300,300i,400,400i,500,500i,600,600i,700,700i,800,800i,900,900i');

html{
   height:100%;
   width:100%;
}

html, body{
  padding: 0;
  margin: 0;
  font-family: 'Raleway', sans-serif;
}

body{
   background: linear-gradient(to bottom,#f9fbf7, #C9D8FF);
   height:100%;
   display:table;
   width:100%;
   text-align:center;
}

.table_center{
  display:table-cell;
  vertical-align: middle;
}
.drop-down{
    display: inline-block;
    position: relative;
}

.drop-down__button{
  background: linear-gradient(to right,#3d6def, #8FADFE);
  display: inline-block;
  line-height: 40px;
  padding: 0 18px;
  text-align: left;
  border-radius: 4px;
  box-shadow: 0px 4px 6px 0px rgba(0,0,0,0.2);
  cursor: pointer;
}

.drop-down__name {
    font-size: 9px;
    text-transform: uppercase;
    color: #fff;
    font-weight: 800;
    letter-spacing: 2px;
}

.drop-down__icon {
    width: 18px;
    vertical-align: middle;
    margin-left: 14px;
    height: 18px;
    border-radius: 50%;
    transition: all 0.4s;
  -webkit-transition: all 0.4s;
  -moz-transition: all 0.4s;
  -ms-transition: all 0.4s;
  -o-transition: all 0.4s;
  
}



.drop-down__menu-box {
    position: absolute;
    width: 100%;
    left: 0;
    background-color: #fff;
    border-radius: 4px;
  box-shadow: 0px 3px 6px 0px rgba(0,0,0,0.2);
     transition: all 0.3s;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -ms-transition: all 0.3s;
  -o-transition: all 0.3s;
 visibility: hidden;
opacity: 0;
  margin-top: 5px;
}

.drop-down__menu {
    margin: 0;
    padding: 0 13px;
    list-style: none;
  
}
.drop-down__menu-box:before{
  content:'';
  background-color: transparent;
  border-right: 8px solid transparent;
  position: absolute;
  border-left: 8px solid transparent;
  border-bottom: 8px solid #fff;
  border-top: 8px solid transparent;
  top: -15px;
  right: 18px;

}

.drop-down__menu-box:after{
  content:'';
  background-color: transparent;
}

.drop-down__item {
    font-size: 13px;
    padding: 13px 0;
    text-align: left;
    font-weight: 500;
    color: #909dc2;
    cursor: pointer;
    position: relative;
    border-bottom: 1px solid #e0e2e9;
}

.drop-down__item-icon {
    width: 15px;
    height: 15px;
    position: absolute;
    right: 0px;
    fill: #8995b6;
  
}

.drop-down__item:hover .drop-down__item-icon{
  fill: #3d6def;
}

.drop-down__item:hover{
  color: #3d6def;
}



.drop-down__item:last-of-type{
  border-bottom: 0;
}


.drop-down--active .drop-down__menu-box{
visibility: visible;
opacity: 1;
  margin-top: 15px;
}

.drop-down__item:before{
  content:'';
  position: absolute;
width: 3px;
height: 28px;
background-color: #3d6def;
left: -13px;
top: 50%;
transform: translateY(-50%);
  display:none;
}

.drop-down__item:hover:before{
  display:block;
}
!

JS 

              
                $(document).ready(function(){
  $('#dropDown').click(function(){
    $('.drop-down').toggleClass('drop-down--active');
  });
});
!
999px

Console