style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #2F3B45;
}

svg {
    width: 100vw;
}

footer {
    width: 100vw;
    bottom: 0;
    position: absolute;
    left: 0;
    display: flex;
    align-items: flex-end;
    padding-bottom: 3rem;
    justify-content: center;
    overflow: hidden;
    position: absolute;
    width: 100vw;
    height: 400px;
    bottom: 0;
    filter: url("#goo");
}

footer h1 {
    z-index: 2;
    color: white;
    font-family:system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: lighter;
    font-size: calc(2vmin + 8px);
}

footer h1 span {
    font-weight: bold;
    color: #FFA036;
    text-shadow: 0 0 15px; rgba(255, 160, 54, 0.4);
}

footer::after {
    content:  "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 225px;
    clip-path: url("#wave");
    background-color: #28323B;
}

@media only screen and (max-width: 700px) {
    footer::after {
        clip-path: none;
        height: 150px;
    }
}

footer .ball {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: #28323B;
    position: absolute;
    animation: up 5s cubic-bezier(0.18, 0.89, 0.32, 1.28) infinite;
}

@keyframes up {
    0% {
        bottom: 0px;
        width: 100px;
        height: 100px;
    }
    50% {
        bottom: 200px;
    }
    100% {
        bottom: 0px;
        width: 0px;
        height: 0px;
    }
}

@keyframes up-small {
    0% {
        bottom: 0px;
        width: 100px;
        height: 100px;
    }
    50% {
        bottom: 150px;
    }
    100% {
        bottom: 0px;
        width: 0px;
        height: 0px;
    }
}