javascript - 在另一个 html 元素上具有悬停效果的响应式图像叠加

Question

第一个问题:当我将鼠标悬停在图像上时会显示文本叠加层，但我希望当我将鼠标悬停在具有“点”类的跨度上时显示叠加层，如何实现？

第二个问题:文本叠加层没有响应，它不适合图像大小，我希望当我调整图像大小时，文本叠加层会随着图像调整大小，我该如何实现？

如果有 javascript、bootstrap、css 或其他答案，我将不胜感激!

演示:http://jsfiddle.net/0qgcn2uu/9/

HTML:

<span class="point"></span>

<div class="caption">
    <img src="http://www.blasdale.com/pictures/2007/Hendon/thumbs/IMG_3337.jpg" />
    <div class="caption__overlay">
        <div class="caption__overlay__content">
            <img id="hello" class="caption__media" src="http://localhost/wp-content/themes/twentyfifteen/images/velveti-grid-item-text-1.png">
            </a>
        </div>
    </div>
</div>

CSS:

.caption {
    position: relative;
    overflow: hidden;
    -webkit-transform: translateZ(0);
}
.caption::before {
    content:' ';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: transparent;
    transition: background .35s ease-out;
}
/* This block of code is working. When i hover on my img, it gets the overlay
.caption:hover::before {
    background: rgba(248, 214, 215, .5);
}
*/

/* I want that when i hover on the circle, the image would get this overlay, but this doesn't work */
 .point:hover + .caption::before {
    background: rgba(248, 214, 215, .5);
}
.point {
    position: absolute;
    display: block;
    height: 25px;
    width: 25px;
    border-radius: 30px;
    background-color: black;
    z-index: 1;
}
.caption__overlay {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 10px;
    color: white;
    -webkit-transform: translateY(100%);
    transform: translateY(100%);
    transition: -webkit-transform .35s ease-out;
    transition: transform .35s ease-out;
}
.caption:hover .caption__overlay {
    -webkit-transform: translateY(0);
    transform: translateY(0);
}

Answer 1

要解决第一个问题，您需要更改:

.caption:hover .caption__overlay {

收件人:

.point:hover + .caption .caption__overlay {

第二个问题解决了:

.caption {
    display: inline-block;
}

.caption__media{
    max-width: 100%;
}

DEMO