index.css

body,html  {
    background-color: #40a2ff; 
    height: 100%;
    width: 100%;
    margin: 0%;
    padding: 0%;
    
    
}

.main-div   {
    height: 100%;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content:center;
   
}

.drop   {
    position: relative;
    height: 200px;
    width: 200px;
    background: #54ABFB;
    border-radius: 51% 49% 48% 52% / 62% 44% 56% 38%;
    opacity: 0.8;
    border: 2px solid #3d93ff;
    
}

.drop::before   {
    content: "";
    position:absolute;
    height: 100%;
    width: 100%;
    background: #318CFE;
    border-radius: 51% 49% 48% 52% / 62% 44% 56% 38%;
    box-shadow: -20px 30px 16px #1B6CFB, -40px 60px 32px #1b6cfb, inset -6px 6px 10px #1B6CFB, inset 2px 6px 10px #1a74e5, inset 20px -20px 22px white, inset 40px -40px 44px #a8ceff;
}

.drop::after    {
    content: "";
    position: absolute;
    height: 40px;
    width: 40px;
    background: #E6FDFB;
    border-radius: 44% 56% 46% 54% / 36% 50% 50% 64%;
    left: 130px;
    top: 40px;
    box-shadow: 16px 40px 0 -10px white;
    opacity: 0.8;
}