css3-radio不规则形状动画

利用质数做随机图形

参考网站 http://2016.uxlondon.com/speakers

.list {
            margin: 10px;
            display: inline-block;
            width: 168px; height: 168px;
            border: 4px solid #00C7E9;
            border-radius: 87% 91% 98% 100%;
            -webkit-transition: all .35s;
            transition: all .35s;
            overflow: hidden;
        }
        .list img{
            min-height: 100%;
            width: -webkit-calc(50% + 50%);
            height: -webkit-calc(50% + 50%);
            object-fit: cover;
            background: #ddd;
        }

        .list:hover {
            border-radius: 95% 70% 100% 80%;
            transform: rotate(-2deg);
        }

        .list:nth-child(2n+1) {
            border-radius: 59% 52% 56% 59%;
            transform: rotate(-6deg);
        }

        .list:nth-child(2n+1):hover {
            border-radius: 51% 67% 56% 64%;
            transform: rotate(-4deg);
        }

        .list:nth-child(3n+2) {
            border-radius: 84% 94% 83% 72%;
            transform: rotate(5deg);
        }

        .list:nth-child(3n+2):hover {
            border-radius: 69% 64% 53% 70%;
            transform: rotate(0deg);
        }

        .list:nth-child(5n+3) {
            border-radius: 73% 100% 82% 100%;
            transform: rotate(7deg);
        }

        .list:nth-child(5n+3):hover {
            border-radius: 73%;
            transform: rotate(7deg);
        }

        .list:nth-child(7n+5) {
            border-radius: 93% 90% 85% 78%;
            transform: rotate(-2deg);
        }

        .list:nth-child(7n+5):hover {
            border-radius: 53% 70% 85% 68%;
            transform: rotate(-2deg);
        }

        .list:nth-child(11n+7) {
            border-radius: 68% 68% 83% 53%;
            transform: rotate(-2deg);
        }

        .list:nth-child(11n+7):hover {
            border-radius: 58% 98% 78% 83%;
            transform: rotate(3deg);
        }

<div class="constr">
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
    <div class="list"><img src="../test1.jpg"></div>
</div>