How to use CSS to achieve the surface shadow effect sample code sharing

I don’t know what you will do when you encounter a very gorgeous design drawing when working on a project. Some design drawings often use shadow effects to make them look more three-dimensional. Generally, lazy people like me just cut out the drawings. I didn't even think about studying how to implement the code.

Later on, our design drafts were constantly being revised and revised. *** was really annoying me to death. If he changed the drawings, I would cut them out and replace them with the original ones. So I decided to study this thing. In fact, we can achieve it!

As shown in the picture:

The above effect is the most typical effect of daily writing projects. Friends who do design must know that PS can do it in minutes , but can we also implement it in code? ——Tell them: It must be possible! Haha o(∩_∩)o; If you are talking big words, then you should put some effort into research!

Part One: HTML

The content of the page part is very simple. Next, let us look at the CSS part.

<p class="con yy">
     <h1 id="曲线阴影">曲线阴影</h1></p><ul class="box">
     <li><img  src="/static/imghwm/default1.png"  data-src="img/1.jpg"  class="lazy"   alt="How to use CSS to achieve the surface shadow effect sample code sharing" ></li>
     <li><img  src="/static/imghwm/default1.png"  data-src="img/2.jpg"  class="lazy"   alt="How to use CSS to achieve the surface shadow effect sample code sharing" ></li>
     <li><img  src="/static/imghwm/default1.png"  data-src="img/3.jpg"  class="lazy"   alt="How to use CSS to achieve the surface shadow effect sample code sharing" ></li></ul>

Part 2: CSS3

When we see the picture above, everyone’s first impression must be CSS3 box-shadow ,But if it’s just like this, can we achieve it? It's clear not.

Whether it is a curved surface or a warped edge, box-shadow cannot be realized by itself. We need to cooperate with CSS3's pseudo-class element to achieve it.

Let’s take a look at the code!

We can implement surface shading with the following code. Friends who are not familiar with pseudo-class elements can check the documentation by themselves.

*{ padding: 0; margin: 0; list-style: none;}.con{ 
    width: 70%; 
    height: 200px;
    margin: 50px auto;
    background:#FFFFFF;
    line-height: 200px;
    text-align: center;
    font-size: 24px;
}.yy{
    position: relative;
    box-shadow: 0 1px 4px rgba(0,0,0,0.3), 0 0 40px rgba(0,0,0,0.1) inset;
    -webkit-box-shadow:0 1px 4px rgba(0,0,0,0.3), 0 0 40px rgba(0,0,0,0.1) inset;
    -moz-box-shadow:0 1px 4px rgba(0,0,0,0.3), 0 0 40px rgba(0,0,0,0.1) inset;
    -o-box-shadow: 0 1px 4px rgba(0,0,0,0.3), 0 0 40px rgba(0,0,0,0.1) inset;
}.yy:after , .yy:before{
    position: absolute;
    content: '';
    top: 50%;
    bottom: -1px;
    left: 10px;
   right: 10px;
    background:#fff;
    z-index: -1;    /* 圆角水平为100px 垂直为10px 必须用‘/’分开 ，不可以为空格 */
    border-radius: 100px/10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
   -webkit-box-shadow: 0 0 20px rgba(0,0,0,0.3);
   -moz-box-shadow: 0 0 20px rgba(0,0,0,0.3);
   -o-box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

The following code is how to achieve the effect of warping shadow:

.box{ 
    width: 980px;
    height: 300px;
    margin: 0 auto; 
}.box li img{
    display: block;
    width: 290px;
    height: 200px;
}.box li{
   position: relative;
    float: left;
    width: 290px;
    height: 200px;
    background: #FFFFFF;
    padding: 5px;
    margin-right: 25px;
    box-shadow: 0 0px 4px rgba(0,0,0,0.3) , 0 0 60px rgba(0,0,0,0.1) inset;
    -moz-box-shadow: 0 0px 4px rgba(0,0,0,0.3) , 0 0 60px rgba(0,0,0,0.1) inset;
    -webkit-box-shadow: 0 0px 4px rgba(0,0,0,0.3) , 0 0 60px rgba(0,0,0,0.1) inset;
    -o-box-shadow: 0 0px 4px rgba(0,0,0,0.3) , 0 0 60px rgba(0,0,0,0.1) inset; 
}.box li:before{
    position:absolute;
    content: '';
    width: 90%;
    height: 80%;
    left: 18px;
    bottom: 11px;
    z-index: -2;
    background: transparent;
    box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    -moz-box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    -webkit-box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    -o-box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    transform: skew(-12deg) rotate(-5deg);
    -moz-transform: skew(-12deg) rotate(-5deg);
    -webkit-transform: skew(-12deg) rotate(-5deg);
    -o-transform: skew(-12deg) rotate(-5deg); 
}.box li:after{
    position:absolute;
    content: '';
    width: 90%;
    height: 80%;
    right: 18px;
    bottom: 11px;
    z-index: -2;
    background: transparent;
    box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    -moz-box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    -webkit-box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    -o-box-shadow: 0 8px 20px rgba(0,0,0,0.6);
    transform: skew(12deg) rotate(5deg);
    -moz-transform: skew(12deg) rotate(5deg);
    -webkit-transform: skew(12deg) rotate(5deg);
    -o-transform: skew(12deg) rotate(5deg); 
}

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