.dropdown {
    position: relative;

    /* Demo */
    width: 6rem;

    align-items: flex-start;
    display: flex;
    justify-content: center;
}

.dropdown__trigger {
    cursor: pointer;

    /* Demo */
    border: 1px solid #d1d5db;
    border-radius: 0.25rem;
    height: 2rem;
    width: 6rem;
    padding: 0.25rem 0.5rem;

    align-items: center;
    display: flex;
    justify-content: center;
}

/* 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;
}

.dropdown__body {
    /* Demo */
    border: 1px solid #d1d5db;
    border-radius: 0.25rem;
    height: 6rem;
    width: 8rem;
}

/* Show the content when hover on the container */
.dropdown:hover .dropdown__content {
    display: block;
}