*,
*::before,
*::after {
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
}

body {
  font-family: sans-serif;
  margin: 0;
  padding: 10px;
}

.dropdown {
  margin: 0;
  padding: 0;
  list-style: none;
  width: 100px;
  background-color: #0abf53;
}

.dropdown li {
  position: relative;
}

.dropdown li a {
  color: #ffffff;
  text-align: center;
  text-decoration: none;
  display: block;
  padding: 10px;
}

.dropdown li ul {
  position: absolute;
  top: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
  display: none;
  line-height: normal;
  background-color: #333;
}

.dropdown li ul li a {
  text-align: left;
  color: #cccccc;
  font-size: 14px;
  padding: 10px;
  display: block;
  white-space: nowrap;
}

.dropdown li ul li a:hover {
  background-color: #0abf53;
  color: #ffffff;
}

.dropdown li ul li ul {
  left: 100%;
  top: 0;
}

ul li:hover>a {
  background-color: #0abf53;
  color: #ffffff !important;
}

ul li:hover>ul {
  display: block;
}