How to specify the position of sub-menu div and prevent the menu div changed

Question

I followed a tutorial about the dropdown menu from here.

But I got stuck when I tried to implement the sub-menu. So far, I have managed to make this code. HTML:

<div class="dropdown" style="float:left;">
  <button class="dropbtn">Left</button>
  <div class="dropdown-content" style="left:0;">
    <div class="dropdown-list draggable" href="#">Link 1
        <div class="dropdown-sub-list">
          <div class="draggable" href="#">Link 4</div>
          <div class="draggable" href="#">Link 5</div>
          <div class="draggable" href="#">Link 6</div>
          <div class="draggable" href="#">Link 7</div>
        </div>
    </div>
    <div class="dropdown-list draggable" href="#">Link 2
    <div class="dropdown-sub-list">
          <div class="draggable" href="#">Link 4b</div>
          <div class="draggable" href="#">Link 5b</div>
          <div class="draggable" href="#">Link 6b</div>
          <div class="draggable" href="#">Link 7b</div>
        </div>
    </div>
    <div class="dropdown-list draggable" href="#">Link 3</div>
  </div>
</div>

CSS:

.dropbtn {
    background-color: #4CAF50;
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropdown-sub-list {
    display: none;
    position:relative;
    float:left;
    right: 0;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropdown-content .draggable {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown-content .draggable:hover{background-color: #f1f1f1}

.dropdown-list:hover .dropdown-sub-list{
    display : block;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown:hover .dropbtn {
    background-color: #3e8e41;
}

Here is the jsfiddle: https://jsfiddle.net/yusrilmaulidanraji/9sdck1z1/3/

The questions of mine are:

• How could I move the sub-menu to the exactly on the right side of the menu?
• How to prevent the resizing of the menu because of the appearance of the sub-menu?

Thank you in advance.

Answer 1

Updated Fiddle.

1. Add position: relative(so that the dropdown can be positioned to right) in .dropdown-content .draggable
   
   
2. Use position: absolute on .dropdown-sub-list. Also add left: 100%(moves drop down to the right); top: 0 (moves drop down to the top)

.dropbtn {
  background-color: #4CAF50;
  color: white;
  padding: 16px;
  font-size: 16px;
  border: none;
  cursor: pointer;
}
.dropdown {
  position: relative;
  display: inline-block;
}
.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}
.dropdown-sub-list {
  display: none;
  position: absolute;
  top: 0;
  left: 100%;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}
.dropdown-content .draggable {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  position: relative;
}
.dropdown-content .draggable:hover {
  background-color: #f1f1f1
}
.dropdown-list:hover .dropdown-sub-list {
  display: block;
}
.dropdown:hover .dropdown-content {
  display: block;
}
.dropdown:hover .dropbtn {
  background-color: #3e8e41;
}

<div class="dropdown" style="float:left;">
  <button class="dropbtn">Left</button>
  <div class="dropdown-content" style="left:0;">
    <div class="dropdown-list draggable" href="#">Link 1
      <div class="dropdown-sub-list">
        <div class="draggable" href="#">Link 4</div>
        <div class="draggable" href="#">Link 5</div>
        <div class="draggable" href="#">Link 6</div>
        <div class="draggable" href="#">Link 7</div>
      </div>
    </div>
    <div class="dropdown-list draggable" href="#">Link 2
      <div class="dropdown-sub-list">
        <div class="draggable" href="#">Link 4b</div>
        <div class="draggable" href="#">Link 5b</div>
        <div class="draggable" href="#">Link 6b</div>
        <div class="draggable" href="#">Link 7b</div>
      </div>
    </div>
    <div class="dropdown-list draggable" href="#">Link 3</div>
  </div>
</div>