css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    vertical-align: middle;
}
a {
    text-decoration: none;
}
ul {
    list-style: none;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
/* 正常情况下滑块的样式 */
::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, .05);
    border-radius: 2px;
    -webkit-box-shadow: inset 1px 1px 0 rgba(0, 0, 0, .1);
}
/* 鼠标悬浮在该类指向的控件上时滑块的样式 */
:hover::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, .2);
    border-radius: 2px;
    -webkit-box-shadow: inset 1px 1px 0 rgba(0, 0, 0, .1);
}
/* 鼠标悬浮在滑块上时滑块的样式 */
::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, .4);
    -webkit-box-shadow: inset 1px 1px 0 rgba(0, 0, 0, .1);
}
/* 正常时候的主干部分 */
::-webkit-scrollbar-track {
    border-radius: 2px;
    -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0);
    background-color: inherit;
}
/* 鼠标悬浮在滚动条上的主干部分 */
::-webkit-scrollbar-track:hover {
    -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, .4);
    background-color: inherit;
}

// html 部分
<div class="drops">
    <div class="drop"></div> 
    <div class="drop"></div>
    <div class="drop"></div>
    <div class="drop"></div>
</div>

// css 部分
.drops {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.drop {
    position: absolute;
    width: 150px;
    height: 150px;
    background: transparent;
    border-radius: 53% 47% 34% 66% / 45% 63% 37% 55%;
    box-shadow: inset 10px 10px 10px rgba(0,0,0,0.05),
                15px 25px 10px rgba(0,0,0,0.1),
                15px 20px 20px rgba(0,0,0,0.05),
                inset -10px -10px 15px rgba(255,255,255,0.9);
}
.drop::before {
    content: '';
    position: absolute;
    top: 25px;left: 35px;
    background: #fff;
    width: 20px;
    height: 20px;
    border-radius: 64% 36% 70% 30% / 64% 30% 70% 36%;
}
.drop::after {
    content: '';
    position: absolute;
    top: 25px;left: 65px;
    background: #fff;
    width: 10px;
    height: 10px;
    border-radius: 64% 36% 70% 30% / 64% 55% 45% 36%;
}
.drop:nth-child(2) {
    transform: scale(0.5) translate(-200px,180px);
    border-radius: 49% 51% 31% 69% / 38% 55% 45% 62%;
}
.drop:nth-child(3) {
    transform: scale(0.5) translate(280px,10px);
    border-radius: 57% 43% 45% 55% / 38% 55% 45% 62% ;
}
.drop:nth-child(4) {
    transform: scale(0.35) translate(120px,-350px);
    border-radius: 57% 43% 30% 70% / 68% 55% 45% 32%;
}