SOURCE

<figure>
    <figcaption>我的偶像：钢铁侠</figcaption>
    <p id="line1">
    <img id="picture1-1" src="https://img1.baidu.com/it/u=2635359779,2295021279&fm=26&fmt=auto&gp=0.jpg">
    <img id="picture1-2" src="https://img1.baidu.com/it/u=3603159866,823086297&fm=26&fmt=auto&gp=0.jpg">
    <img id="picture1-3" src="https://img0.baidu.com/it/u=1126035016,3180067239&fm=26&fmt=auto&gp=0.jpg">
    </p>
    <p id="line2">
    <img id="picture2-1" src="https://img0.baidu.com/it/u=3992175124,2166522861&fm=26&fmt=auto&gp=0.jpg">
    <img id="picture2-2" src="https://img2.baidu.com/it/u=2344561334,1909946472&fm=26&fmt=auto&gp=0.jpg">
    <img id="picture2-3" src="https://img1.baidu.com/it/u=3282391155,97453243&fm=26&fmt=auto&gp=0.jpg">
    </p>
</fifure>

figure {
    border: 3px solid gray;
    width:900px;
}
figcaption {
    text-align:center;
    font-size:2em;
    line-height:2em;
    font-family:Arial, Helvetica, sans-serif;

}
img {
    width: 250px;
    padding:20px;
}

#picture1-1,#picture1-3,#picture2-1,#picture2-3 {
    transform:rotate(15deg);
}

#picture1-2,#picture2-2 {
    transform:rotate(-15deg);

}