CH - CSS Snippets

Image overlay on hover

CSS, Visual, Advanced

Displays an image overlay effect on hover.

Use the :before and :after elements for the top and bottom bars of the overlay respectively, setting their opacity, transform and transition to produce the desired effect.
Use the figcaption for the text of the overlay, setting display: flex, flex-direction: column and justify-content: center to center the text into the image.
Use the :hover pseudo-selector to update the opacity and transform of all the elements and produce the desired effect.

<figure class="hover-img">
                                                            <img src="https://i.picsum.photos/id/200/440/320.jpg"/>
                                                            <figcaption>
                                                              <h3>Lorem <br/>Ipsum</h3>
                                                            </figcaption>
                                                          </figure>

.hover-img {
                                                            background-color: #000;
                                                            color: #fff;
                                                            display: inline-block;
                                                            margin: 8px;
                                                            max-width: 320px;
                                                            min-width: 240px;
                                                            overflow: hidden;
                                                            position: relative;
                                                            text-align: center;
                                                            width: 100%;
                                                          }
                                                          
                                                          .hover-img * {
                                                            box-sizing: border-box;
                                                            transition: all 0.45s ease;
                                                          }
                                                          
                                                          .hover-img:before,
                                                          .hover-img:after {
                                                            background-color: rgba(0, 0, 0, 0.5);
                                                            border-top: 32px solid rgba(0, 0, 0, 0.5);
                                                            border-bottom: 32px solid rgba(0, 0, 0, 0.5);
                                                            position: absolute;
                                                            top: 0;
                                                            bottom: 0;
                                                            left: 0;
                                                            right: 0;
                                                            content: '';
                                                            transition: all 0.3s ease;
                                                            z-index: 1;
                                                            opacity: 0;
                                                            transform: scaleY(2);
                                                          }
                                                          
                                                          .hover-img img {
                                                            vertical-align: top;
                                                            max-width: 100%;
                                                            backface-visibility: hidden;
                                                          }
                                                          
                                                          .hover-img figcaption {
                                                            position: absolute;
                                                            top: 0;
                                                            bottom: 0;
                                                            left: 0;
                                                            right: 0;
                                                            align-items: center;
                                                            z-index: 1;
                                                            display: flex;
                                                            flex-direction: column;
                                                            justify-content: center;
                                                            line-height: 1.1em;
                                                            opacity: 0;
                                                            z-index: 2;
                                                            transition-delay: 0.1s;
                                                            font-size: 24px;
                                                            font-family: sans-serif;
                                                            font-weight: 400;
                                                            letter-spacing: 1px;
                                                            text-transform: uppercase;
                                                          }
                                                          
                                                          .hover-img:hover:before,
                                                          .hover-img:hover:after {
                                                            transform: scale(1);
                                                            opacity: 1;
                                                          }
                                                          
                                                          .hover-img:hover > img {
                                                            opacity: 0.7;
                                                          }
                                                          
                                                          .hover-img:hover figcaption {
                                                            opacity: 1;
                                                          }