body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 90vh;
    background: #000000;
}

.container {
    background-color: #0693f1;
    height: 100px;
    width: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 0 0.25rem #b4b1b1;
    flex-direction: column;
    animation: spin 5s ease-in-out infinite;
    border-radius: 50%;
}

.cup {
    background-color: #b6d5ea;
    height: 30%;
    width: 30%;
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
    overflow: hidden;
}

.top {
    transform: rotate(180deg);
}

.sand {
    background-color: #e9a410;
    height: 150%;
    width: 150%;
    transform-origin: 0% 0%;
    animation: sandFall 5s linear infinite -2.5s;
}

.bottom {
    animation-delay: 0s;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    25%,
    50% {
        transform: rotate(180deg);
    }

    75% {
        transform: rotate(360deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes sandFall {

    0%,
    100% {
        border-radius: 5%;
        transform: translate(35%, 20%) rotate(45deg);
    }

    15% {
        border-radius: 40%;
        transform: translate(0%, 35%) rotate(-65deg) scale(1.5, 1.5);
    }

    25% {
        border-radius: 20%;
        transform: translate(-15%, 35%) rotate(-90deg) scale(1.2, 1.2);
    }

    50% {
        border-radius: 5%;
        transform: translate(0%, 0%) rotate(-90deg) scale(1.1);
        opacity: 1;
    }

    50.01%,
    64.99% {
        opacity: 0;
    }

    65% {
        border-radius: 35%;
        transform: translate(20%, 50%) rotate(30deg);
        opacity: 1;
    }

    75% {
        border-radius: 10%;
        transform: translate(35%, 40%) rotate(45deg);
    }
}