console
<div id="app">
<div class="drop"></div>
</div>
*,
*:before,
*:after {
box-sizing: border-box;
}
.drop {
background: rgba(255, 255, 245, 1);
border: 4px solid rgba(255, 245, 235, 1);
border-radius: 100%;
box-shadow: inset -0.1em 0 2em 0.5em rgba(255, 255, 255, 0.5),
inset -0.1em 0 0.5em 0 rgba(0, 0, 0, 0.8);
position: relative;
margin: 0 auto;
width: 15em;
height: 15em;
overflow: hidden;
}
.drop:before,
.drop:after {
content:"";
display:block;
position:absolute;
}
/* Drop */
.drop:before {
background: rgba(167, 217, 234, 1);
border-radius: 100%;
/* Drop start */
box-shadow: 0 0 0 0.1em rgba(167, 217, 234, 0.8),
0 0 0 0.15em rgba(167, 217, 234, 0.8),
0 0 0 0.2em rgba(167, 227, 234, 0.8),
0 0 0 0.25em rgba(167, 227, 234, 0.8),
0 0 0 0.3em rgba(167, 227, 234, 0.8),
0 0 0 0.35em rgba(167, 227, 234, 0.8),
0 0 0 0.4em rgba(167, 227, 234, 0.8),
0 0 0 0.45em rgba(167, 227, 234, 0.8),
0 0 0 0.5em rgba(167, 227, 234, 0.8);
top: 0%; left: 50%;
/* The "width" and "height" of the division must be smaller than the "box-shadow" total size. So we can control different variant sizes. */
width: 0.2em;
height: 0.2em;
animation: fall 3.5s cubic-bezier(0.5, 0, 1, 0.5) infinite;
}
/* Surface */
.drop:after {
background: rgb(52, 152, 219);
background: linear-gradient(rgba(52, 255, 255, 1) 0%, rgba(52, 152, 219, 1) 10%, rgba(152, 252, 219, 1) 100%);
border-radius: 100% 0 50% 0;
left: 0;
bottom: 0;
width: inherit;
height: 3em;
opacity: 0.7;
animation: surface 3s linear infinite;
}
/* Drop animation */
@keyframes fall {
/* Drop form */
5%, 15% {
box-shadow: 0 -1.4em 0 0.1em rgba(167, 217, 234, 1),
0 -0.8em 0 0.15em rgba(167, 217, 234, 1),
0 -0.3em 0 0.2em rgba(167, 217, 234, 1),
0 -0.1em 0 0.25em rgba(167, 217, 234, 1),
0 0 0 0.3em rgba(167, 217, 234, 1),
0 0.2em 0 0.35em rgba(167, 217, 234, 1),
0 0.4em 0 0.4em rgba(167, 217, 234, 1),
0 0.6em 0 0.45em rgba(167, 217, 234, 1),
0 0.8em 0 0.5em rgba(167, 217, 234, 1);
}
/* Drop fall */
16% {
top: 80%;
}
/* Contact surface */
18% {
top: 80%;
box-shadow: 1em -8em 0 0.2em rgba(177, 227, 234, 1),
-2.2em -3.8em 0 0.1em rgba(177, 227, 234, 1),
3em -2.85em 0 0.3em rgba(177, 227, 234, 1),
-3.5em -4em 0 0.2em rgba(177, 227, 234, 1),
0 0 0 0.3em rgba(177, 227, 234, 1),
2em -2em 0 0.2em rgba(177, 227, 234, 1),
-0.3em -3em 0 0.2em rgba(177, 227, 234, 1),
0.5em -5em 0 0.35em rgba(177, 227, 234, 1),
-3em -1em 0 0.3em rgba(177, 227, 234, 1);
}
/* Dispersion */
30% {
top: 90%;
box-shadow: 1.5em 0 0 0.2em rgba(252, 252, 255, 0.1),
-2em 0 0 0.15em rgba(252, 252, 255, 0.1),
3em 0 0 0.2em rgba(252, 252, 255, 0.1),
-2em 0 0 0.25em rgba(252, 252, 255, 0.1),
0 0 0 0.2em rgba(252, 252, 255, 0.1),
2.35em 0 0 0.3em rgba(252, 252, 255, 0.1),
-0.5em 0 0 0.2em rgba(252, 252, 255, 0.1),
1em 0 0 0.3em rgba(252, 252, 255, 0.1),
-4em 0 0 0.4em rgba(252, 252, 255, 0.1);
}
/* Hidden */
40%, 100% {
top: 95%;
background: rgba(255, 255, 255, 1);
box-shadow: 1.8em 0.5em 0 0.2em rgba(255, 255, 255, 0),
-3em 0.5em 0 0.1em rgba(255, 255, 255, 0),
4em 0.5em 0 0.1em rgba(255, 255, 255, 0),
-3.5em 0.5em 0 0.1em rgba(255, 255, 255, 0),
0 0 0 0.3em rgba(255, 255, 215, 0),
2.45em 0.5em 0 0.1em rgba(255, 255, 255, 0),
-0.8em 0.5em 0 0.2em rgba(255, 255, 255, 0),
1.5em 0.5em 0 0.3em rgba(255, 255, 255, 0),
-4.5em 0.5em 0 0.2em rgba(255, 255, 255, 0);
}
}
/* Animation of water surface */
@keyframes surface {
50% {
border-radius: 0 75% 0 75%;
opacity: 0.5;
height: 3.5em;
}
}