Developing smooth transitions using CSS within a large navigation menu

In Magento 2.3, I am incorporating a module to create a mega menu where, upon hovering over a main menu item, a drop-down is supposed to display content. However, the client specifically requested a delay of 1 second before the drop-down appears. The challenge here is that the selected module does not include any JQuery or Javascript functionality, so my approach involves finding a solution using CSS.

The specific class that needs the 1-second delay is: .bss-megamenu .dropdown.bss-megamenu-fw .dropdown-menu

I attempted to implement the following code without success:

.bss-megamenu .dropdown.bss-megamenu-fw .dropdown-menu {transition: 1s;}

Below is the complete CSS for the drop-down:

INSERT FULL DROP DOWN CSS HERE

If CSS alone cannot achieve the desired delay, I am open to exploring alternative solutions.

Answer №1

A demonstration has been created with simplicity in mind to ensure its effectiveness

 * {
        padding: 2px;
        margin: 4px;
        list-style: none;
    }


    .box {
        border: 1px solid red;
    }

    h3 {
        border: 1px solid green;
    }

    .box ul {
        border: 1px solid blue;
    }

    /* -------------------- */
    
    .box ul {
        opacity: 0;
    }

    .box:hover ul {
        animation: hover 1s 1;
        opacity: 1;
    }

    @keyframes hover {
        0% {
            opacity: 0;
        }

        99% {
            opacity: 0;
        }

        100% {
            opacity: 1;
        }
    }
<div class="box">
    <h3>Revealing items after a delay of one second</h3>
    <ul>
        <li>item01</li>
        <li>item02</li>
        <li>item03</li>
    </ul>
</div>

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