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Written byPhuoc Nguyen
29 Nov, 2019


<div class="dropdown">
<!-- The trigger element -->
<div class="dropdown__trigger">...</div>

<!-- The content -->
<div class="dropdown__content">...</div>


.dropdown {
position: relative;

.dropdown__trigger {
cursor: pointer;

/* Hide the dropdown's content by default */
.dropdown__content {
display: none;

/* Position it right below the trigger element */
left: 0;
padding-top: 0.25rem;
position: absolute;
top: 100%;

/* It should be on the top of other elements */
background-color: #fff;
z-index: 9999;

/* Show the content when hover on the container */
.dropdown:hover .dropdown__content {
display: block;
You can use a triangle button to indicate that there is content under it.
Move the mouse over the button to see the dropdown.

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Phước Nguyễn