Dropdown menu

            html {
margin:0px;
padding:0px;
}
 
body  {
margin:0;
}
 
#container {
width:800px;
text-align:center;
margin:0 auto;
}
 
#head {
background-image:url('test.jpg');
width:850px;
height:128px;
border:1px solid black;
border-top-right-radius:15px;
border-top-left-radius:15px;
}
 
#menu{
text-align:center;
border-left:1px solid black;
border-right:1px solid black; 
width:850px;
height:45px;
}
 
ul {
font-size:15px;
margin:0;
padding:0;
list-style: none;
}
 
ul li {
width:138px;
display:inline-block;
}
 
li ul {
display:none;
}

ul li a { 
border-radius: 10px;
border: 0px solid black;
display:block;
text-decoration: none;
color: #ffffff;
border-top: 1px solid;
padding: 5px 15px 5px 15px;
background-image: linear-gradient(bottom, #22292C 42%, #3E4647 71%);
   
    background-image: -o-linear-gradient(bottom, #22292C 42%, #3E4647 71%);
    background-image: -moz-linear-gradient(bottom, #22292C 42%, #3E4647 71%);
    background-image: -webkit-linear-gradient(bottom, #22292C 42%, #3E4647 71%);
    background-image: -ms-linear-gradient(bottom, #22292C 42%, #3E4647 71%);
     
    background-image: -webkit-gradient(
    linear,
    left bottom,
    left top,
    color-stop(0.42, #22292C),
    color-stop(0.71, #3E4647)
);
margin-left: 1px;
white-space: nowrap;
}
 
ul li a:hover {
background-color:black;
color:white;
}
 
li:hover ul {
display:block;
position:absolute;
}
 
li:hover li {
float:none;
font-size:14px;
color:white;
}

li:hover ul li {
    display: block;
}
 
li:hover a {
color:white;
}
     
li:hover li a:hover {
    background-image: linear-gradient(bottom, #666666 42%, #91948F 71%);
background-image: -o-linear-gradient(bottom, #666666 42%, #91948F 71%);
background-image: -moz-linear-gradient(bottom, #666666 42%, #91948F 71%);
background-image: -webkit-linear-gradient(bottom, #666666 42%, #91948F 71%);
background-image: -ms-linear-gradient(bottom, #666666 42%, #91948F 71%);
 
background-image: -webkit-gradient(
    linear,
    left bottom,
    left top,
    color-stop(0.42, #666666),
    color-stop(0.71, #91948F)
);
color:white;
    -webkit-transition: all 0.9s ease-out;
    -moz-transition: all 0.9s ease-out;
    -o-transition: all 0.9s ease-out;
    -ms-transition: all 0.9s ease-out;
    }