body {
    background-color: #3F2F3A;
    margin: 0;
    padding: 0;
}

.container {
    position: relative;
    margin: auto;
    display: block;
    margin-top: 8%;
    width: 600px;
    height: 400px;
}

.cup {
    position: absolute;
    background-color: #ecfdf7;
    border-radius: 0 0 25px 25px;
    width: 40%;
    height: 70%;
    top: 12.5%;
    left: 25%;
    background: linear-gradient(to top, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 5px solid rgba(255, 255, 255, 0.06);
    border-top: none;
    border-bottom: 15px solid rgba(255, 255, 255, 0.06);
    position: relative;
    box-sizing: border-box;
    overflow: hidden;
}

.cup-liquid {
    position: absolute;
    position: relative;
    background: #f17b3f;
    box-shadow: inset 0 0 50px rgba(0, 0, 0, .5);
    transition: 0.5s;
    border-radius: 0 0 5% 5%;
    width: 100%;
    height: 100%;
    top: 0%;
    left: 0%;
}

.cup-liquid:before, .cup-liquid:after {
    content: "";
    width: 200%;
    height: 200%;
    position: absolute;
    top: 15%;
    left: 30%;
    background: #000;
}

.cup-liquid:before {
    border-radius: 45%;
    background: rgba(255, 255, 255, 1);
    background: rgba(63, 47, 58, 1);
    animation: animate 5s linear infinite;
}

.cup-liquid:after {
    border-radius: 40%;
    background: rgba(255, 255, 255, .5);
    background: rgba(63, 47, 58, .5);
    animation: animate 10s linear infinite;
}
@keyframes animate {
    0% {
      transform: translate(-50%, -75%) rotate(0deg);
    }
    100% {
      transform: translate(-50%, -75%) rotate(360deg);
    }