How TO - Dropup

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Learn how to create a dropup menu with CSS.

Dropup

A dropup menu is a toggleable menu that allows the user to choose one value from a predefined list:

Link 1 Link 2 Link 3

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Create A Hoverable Dropup

Create a dropup menu that appears when the user moves the mouse over an element.

Step 1) Add HTML:

Example

<div class="dropup">
<button class="dropbtn">Dropup</button>
<div class="dropup-content">
    <a href="#">Link 1</a>
    <a href="#">Link 2</a>
    <a href="#">Link 3</a>
</div>
</div>

Example Explained

Use any element to open the dropup menu, e.g. a <button>, <a> or <p> element.

Use a container element (like <div>) to create the dropup menu and add the dropup links inside it.

Wrap a <div> element around the button and the <div> to position the dropup menu correctly with CSS.

Step 2) Add CSS:

Example

/* Dropup Button */
.dropbtn {
  background-color: #3498DB;
color: white;
padding: 16px;
font-size: 16px;
border: none;
}

/* The container <div> - needed to position the dropup content */
.dropup {
  position: relative;
  display: inline-block;
}

/* Dropup content (Hidden by Default) */
.dropup-content {
  display: none;
  position: absolute;
  bottom: 50px;
  background-color: #f1f1f1;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
}

/* Links inside the dropup */
.dropup-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}

/* Change color of dropup links on hover */
.dropup-content a:hover {background-color: #ddd}

/* Show the dropup menu on hover */
.dropup:hover .dropup-content {
  display: block;
}

/* Change the background color of the dropup button when the dropup content is shown */
.dropup:hover .dropbtn {
  background-color: #2980B9;
}

Try it Yourself »

Example Explained

We have styled the dropup button with a background-color, padding, etc.

The .dropup class uses position:relative, which is needed when we want the dropup content to be placed on top of the dropup button (using position:absolute).

The .dropup-content class holds the actual dropup menu. It is hidden by default, and will be displayed on hover (see below). Note the min-width is set to 160px. Feel free to change this. Tip: If you want the width of the dropup content to be as wide as the dropup button, set the width to 100% (and overflow:auto to enable scroll on small screens).

Instead of using a border, we have used the box-shadow property to make the dropup menu look like a "card". We also use z-index to place the dropup in front of other elements.

The :hover selector is used to show the dropup menu when the user moves the mouse over the dropup button.

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