How Can I Preserve CSS Hover State After the Mouse Leaves the Element?

Preserve CSS Hover State After "Unhovering"

In web design, the hover state is commonly used to display additional content on mouse hover. However, by default, this content disappears when the mouse cursor leaves the specified area. This article presents a CSS solution to keep the hover state visible after "unhovering" the cursor.

The provided example utilizes the ':hover' pseudo-class to reveal an image when hovering over a div. However, the image disappears when the hover event ends. To address this, the following CSS technique can be employed:

div img {
    position: absolute;
    opacity: 0;
    transition: 0s 180s;
}

div:hover img {
    opacity: 1;
    transition: 0s;
}

div {
    line-height: 1.2em;
    font-size: 1em;
    color: black;
    transition: 0s 180s;
}

div:hover {
    line-height: 0;
    font-size: 0;
    color: transparent;
    transition: 0;
}

This code uses a combination of absolute positioning, opacity, and transitions to achieve the desired effect. The opacity is initially set to 0, making the image invisible. On hover, the opacity is set to 1, revealing the image. To prevent the content from disappearing on "unhover," the transition property is used with a delay of 180 seconds (3 minutes). This delay effectively inhibits the opacity transition, keeping the image visible indefinitely.

Alternatively, it is also possible to use focus events to ensure that the image remains visible when clicked:

div:hover img:focus {
   opacity: 0;
   transition: 3s;
   -webkit-transform: rotate(-360deg) scale(0.23);
   -webkit-transform: rotate(-360deg) scale(0.23);
   -moz-transform: rotate(-360deg) scale(0.23);
   -o-transform: rotate(-360deg) scale(0.23);
   -ms-transform: rotate(-360deg) scale(0.23);
   transform: rotate(-360deg) scale(0.23);
}

This variant uses focus events and transitions to fade out and rotate the image after it is clicked, keeping it visible during the transition.

By implementing these CSS techniques, you can modify the hover state behavior to maintain the visibility of desired content even after the mouse cursor leaves the specified area.

The above is the detailed content of How Can I Preserve CSS Hover State After the Mouse Leaves the Element?. For more information, please follow other related articles on the PHP Chinese website!