CSS Dropdown menu style

nav ul li {
    display:  inline-block;
    float:  left;
    position: relative;
}
nav ul li a {
    color:  #fff;
    padding: 18px 10px;
    display:  inline-block;
    transition:  all 0.4s;
}
nav ul li a:hover,
nav ul li.active a {
    background-color: #f70501;
    color:  #fff;
}


/*dropdwon menu style*/
nav ul li>ul {
    position: absolute;
    left: 0;
    top: 56px;
    min-width: 250px;
    z-index: 3;
    transition: all 0.4s;
    visibility: hidden;
    transform: scaleY(0);
    transform-origin: center top 0;
    background-color: #821789;
    box-shadow: 4px 2px 4px 2px rgba(0, 0, 0, 0.2);
}
nav ul li>ul li {
    display:  block;
    width:  100%;
    border-bottom:  1px solid #610c67;
}
nav ul li>ul li a {
	display: block;
}
nav ul li>ul li:last-child {
    border-bottom: none;
}
nav ul li:hover>ul {
    visibility: visible;
    transform: scaleY(1);
}
nav ul li>ul li>ul {
    position: absolute;
    left:  250px;
    background: #f2f2f2;
    min-width:  250px;
    transform-origin:  center left 0;
    transform:  scaleX(0);
    visibility:  hidden;
    transition:  all 0.4s;
    top: 0;
    background-color: #821789;
    box-shadow: 4px 2px 4px 2px rgba(0, 0, 0, 0.2);
}
nav ul li>ul li:hover>ul {
    visibility:  visible;
    transform:  scaleX(1);
}