How to add second drop down menu to the first one? - html

Question

i make a drop down menu with css, but i want to ask you, how can i add secondary drop down to the first? If it can't be made with this code, how can i make it? I try to use droppy, but the code bugged i mean the style..
I use this HTML:
<ul id="menu">
<!-- put class="selected" in the li tag for the selected page - to highlight which page you're on -->
<li class="selected">Index</li>
<div class="dropdown">
<li>Drop Down</li>
<div class="dropdown-content">
Link 1
Link 2
Link 3 --> Here i want to add another drop down menu
Link 4
</div>
</div></ul>
And this CSS:
ul#menu
{ float: right;
margin: 0;}
ul#menu li
{ float: left;
list-style: none;
margin: 2px 2px 0 0;
background: #5A5A5A url(tab.png) no-repeat 0 0;
border-top-right-radius: 1.5em;
border-top-left-radius: 1.5em;
overflow:hidden;
max-height: 27px;}
ul#menu li a
{ font: normal 100% 'trebuchet ms', sans-serif;
display: block;
float: left;
height: 20px;
padding: 6px 35px 5px 28px;
text-align: center;
color: #FFF;
text-decoration: none;
background: #5A5A5A url(tab.png) no-repeat 100% 0;}
ul#menu li.selected a
{ height: 20px;
padding: 6px 35px 5px 28px;}
ul#menu li.selected
{ margin: 2px 2px 0 0;
background: #00C6F0 url(tab_selected.png) no-repeat 0 0;
}
ul#menu li.selected a, ul#menu li.selected a:hover
{ background: #00C6F0 url(tab_selected.png) no-repeat 100% 0;
color: #FFF;}
ul#menu li a:hover
{ color: #E4EC04;}
/* The container <div> - needed to position the dropdown content */
.dropdown {
float:left;
position: relative;
display: inline-block;
}
/* Dropdown Content (Hidden by Default) */
.dropdown-content {
display: none;
margin-top: 30px;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
border-radius: 15px;
}
/* Links inside the dropdown */
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
border-radius: 15px;
}
/* Change color of dropdown links on hover */
.dropdown-content a:hover {background-color: #f1f1f1}
/* Show the dropdown menu on hover */
.dropdown:hover .dropdown-content {
display: block;
}
/* Change the background color of the dropdown button when the dropdown content is shown */
.dropdown:hover .dropbtn {
background-color: #3e8e41;
}

Answer 1

I should say that I kept slogging for more than an hour to get this up. As I have just learned HTML and CSS. But enjoyed doing it as it made me learn something new. Thanks.
Here is what I have so far:
CSS:
#menu, #first, #second, #third {
list-style-type: none;
border: 1px solid black;
}
#menu {
text-align: center;
padding-right: 10px;
padding-left: 10px;
width: 70px;
margin: 25px;
}
#first, #second, #third {
position: absolute;
background-color: #f9f9f9;
width: 50px;
display:none;
padding-left: 0;
width: 90px;
margin-left: 25px;
margin-right: 25px;
}
a {
text-decoration: none;
color: black;
}
#menu:hover #first {
display: block;
}
#first:hover #second {
display: block;
}
.hover3:hover #third {
display: block;
}
And here is the HTML:
<ul id="menu">
<!-- put class="selected" in the li tag for the selected page - to highlight which page you're on -->
<li class="hover">Index
<ul id="first">
<li class="hover2">Drop Down
<ul id="second">
<li> Link 1 </li>
<li>Link 2</li>
<li class="hover3">Link 3
<ul id="third">
<li>Link 4</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>