HTML5 practice-code sharing for using css to decorate image galleries (2)

In the previous lecture, our solution used jquery to create a span tag. In this lecture we will use a better solution, using :before and :after Pseudo-classes. :before is often used to add additional elements.

HTML

The following is a picture gallery represented by a ul list.

<ul class="gallery clip">
    <li>
        <img src="http://webdesignerwall.com/wp-content/uploads/2012/09/sample-1.jpg" alt="image">
    </li>
    <li>
        <img src="http://webdesignerwall.com/wp-content/uploads/2012/09/sample-2.jpg" alt="image">
    </li>
    <li>
        <img src="http://webdesignerwall.com/wp-content/uploads/2012/09/sample-1.jpg" alt="image">
    </li></ul>

CSS

The following is the css set for .gallery. One thing to note here is that we need to set position: relative for the a tag under .gallery.

.gallery {
    margin: 0 0 25px;
    text-align: center;
}.gallery li {
    display: inline-block;
    margin: 5px;
    list-style: none;
}.gallery a {
    position: relative;
    display: inline-block;
}

　:before element

We will specify a 30 x 60px paperclip background image for the :before element. Notice that I set the css content attribute to a null value. Without an empty content attribute, the container will not be displayed.

.clip a:before {
    position: absolute;
    content: ' ';
    top: -5px;
    left: -4px;
    width: 30px;
    height: 60px;
    background: url(http://webdesignerwall.com/wp-content/uploads/2012/09/paper-clip.png) no-repeat;
}

Art Border

Using this technique, you can add any masking effect to the image. In the example below, I changed the image background to an artistic border.

.frame a:before {
    position: absolute;
    content: ' ';
    top: -22px;
    left: -23px;
    width: 216px;
    height: 166px;
    background: url(http://webdesignerwall.com/wp-content/uploads/2012/09/frame.png) no-repeat;
}

　HTML5Gallery

We can use html5 tags to create more advanced galleries. In the following example, we use

to wrap the image, and

to contain the image title.

##

<ul class="gallery tape">
    <li>
        <figure> 
            <img src="http://webdesignerwall.com/wp-content/uploads/2012/09/sample-4.jpg" alt="image">
            <figcaption>Image Caption</figcaption>
        </figure>
    </li>
    <li>
        <figure>
            <img src="http://webdesignerwall.com/wp-content/uploads/2012/09/sample-5.jpg" alt="image">
            <figcaption>Image Caption</figcaption>
        </figure>
    </li>
    <li>
        <figure> <img src="http://webdesignerwall.com/wp-content/uploads/2012/09/sample-6.jpg" alt="image">
            <figcaption>Image Caption</figcaption>
        </figure>
    </li></ul>

CSS

I added two: before in css, one for the

element and the other for the

element. The mask image overlay.png is used on figure:before, and the tape image is used on a:before.

.tape li {
    width: 170px;
    padding: 5px;
    margin: 15px 10px;
    border: solid 1px #cac09f;
    background: #fdf8e4;
    text-align: center;
    box-shadow: inset 0 1px rgba(255,255,255,.8), 0 1px 2px rgba(0,0,0,.2);
}.tape figure {
    position: relative;
    margin: 0;
}.tape a:before {
    position: absolute;
    content: ' ';
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(http://webdesignerwall.com/wp-content/uploads/2012/09/overlay.png) no-repeat;
}.tape figcaption {
    font: 100%/120% Handlee, Arial, Helvetica, sans-serif;
    color: #787568;
}.tape a:before {
    position: absolute;
    z-index: 2;
    content: ' ';
    top: -12px;
    left: 50%;
    width: 115px;
    height: 32px;
    margin-left: -57px;
    background: url(http://webdesignerwall.com/wp-content/uploads/2012/09/tape.png) no-repeat;
}

CSS3 Transform

In this example, I used a cork texture background and transformed it using the transform attribute picture.

.transform {
    background: url(http://webdesignerwall.com/wp-content/uploads/2012/09/cork-bg.png);
    padding: 25px;
    border-radius: 10px;
    box-shadow: inset 0 1px 5px rgba(0,0,0,.4);
}.transform li {
    border: none;
}

　Nth-of-Type

In order to make the image rotation more random and natural, I use nth-of-type to filter the images and set different rotation angles for different images.

.transform li:nth-of-type(4n+1) {
    -webkit-transform: rotate(2deg);
}.transform li:nth-of-type(2n) {
    -webkit-transform: rotate(-1deg);
}.transform li:nth-of-type(4n+3) {
    -webkit-transform: rotate(2deg);
}

Okay, that’s it for today’s tutorial.

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