/* https://codepen.io/baarbaracrr/pen/KKovmGb */

.sea {
    margin: auto;
    overflow: hidden;
    min-height: 10vh;
    position: relative;
}

.wave {
    background: rgb(255 255 255 / 25%);
    border-radius: 1000% 1000% 0 0;
    position: absolute;
    width: 200vw;
    height: 5em;
    animation: wave 10s -3s linear infinite;
    transform: translate3d(0, 0, 0);
    opacity: 0.8;
    bottom: 0;
    left: 0;
}

.wave:nth-of-type(2) {
    bottom: -1.25em;
    animation: wave 18s linear reverse infinite;
    opacity: 0.8;
}

.wave:nth-of-type(3) {
    bottom: -2.5em;
    animation: wave 20s -1s reverse infinite;
    opacity: 0.9;
}

@keyframes gradient {
    0% { background-position: 0% 0%; }
    50% { background-position: 100% 100%; }
    100% { background-position: 0% 0%; }
}

@keyframes wave {
    2% { transform: translateX(1); }
    25% { transform: translateX(-25%); }
    50% { transform: translateX(-50%); }
    75% { transform: translateX(-25%); }
    100% { transform: translateX(1); }
}