.leftBtn,
.rightBtn {
  width: 12px;
  height: 12px;
  transition: 0.5s;  
  box-shadow: -2px 2px 0 #9C9C99;
}

.leftBtn {
  transform: rotate(45deg);
}

.arrowWrapper{
    position: relative;
    transition: 0.5s; 
}

.rightBtn {
  float: left;
  transform: rotate(-45deg);
  margin-top: 6px;
}

.arrowWrapper::before{
    content: " ";
    display: block;
    position: absolute;
    top: 0px;
    left: 5px;
    width: 2px;
    height: 20px;
    background-color: #9C9C99;    
    transition: 0.5s; 
}