nav {
  box-sizing: border-box;
  float: left;
  width: 100%;
  background: #3a3a3a;
  font-size: 16px;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
  border: 1px solid black;
  box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.6);
}

nav ul {
  margin: 0;
  padding: 0;
}
 
nav a {
  display: block;
  color: #fff;
  text-decoration: none;
}

nav ul li {
  position: relative;
  float: left;
  list-style: none;
}
 
nav ul li:hover {
  background: #777;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
}
 
nav ul li a {
    padding: 10px;
}

nav ul ul {
  position: absolute;
  top: -9999px;
  left: -9999px;
  background: #444;
  box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.6);
  z-index: 1;
}
 
nav ul ul li {
  float: none;
  width: 170px;
  border-bottom: 2px solid #fff;
}
 
nav ul ul li a {
  padding: 5px 10px;
}

nav ul li:hover > ul {
  top: 100%;
  left: 0;
}

nav ul ul li:hover > ul {
  top: 0;
  left: 10px;
}

nav ul li.submenu > a:after {
  position: relative;
  float: right;
  content: '';
  margin-left: 10px;
  margin-top: 5px;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid #fff;
  border-bottom: 3px solid transparent;
}

nav ul ul li.submenu a:after {
  margin-left: auto;
  margin-right: -10px;
  border-left: 5px solid #fff;
  border-right: 5px solid transparent;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

nav ul ul li:last-child {
  border-bottom: none;
}

input#responsive-nav,
label.responsive-nav-label {
  display: none;
}

@media screen and (max-width: 800px) {
 

label.responsive-nav-label {
  position: relative;
  display: block;
  padding: 12px;
  background: #444;
  cursor: pointer;
  color: #fff;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
}

label.responsive-nav-label span {
  margin-right: 5px;  
}

nav {
  position: absolute;
  top: -9999px;
  padding: 5px;
}
 
input#responsive-nav[type=checkbox]:checked ~ nav {
  position: relative;
  top: 0;
}

nav a:after {
  display: none;
}

nav li {
  float: none !important;
  width: 100% !important;
  border-bottom: none !important;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
}
   
nav li a {
  margin-bottom: 5px !important;
  padding: 5px 10px !important; 
  background: #4a4a4a;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
}
 
nav ul li:hover {
  background: none;
}
   
nav ul li a:hover {
  background: #aaa;
}

nav ul ul {
  position: relative !important;
  width: 100%;
  left: 0 !important;
  top: 0 !important;
  background: none !important;
  box-shadow: none;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
}

nav ul ul li {
  padding-left: 10px;
}
}