.bubble-container {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.bubble {
    position: absolute;
    display: block;
    border-radius: 50%;

    background: radial-gradient(
        circle at 30% 25%,
        rgba(255,255,255,.35),
        rgba(255,215,0,.18) 35%,
        rgba(212,175,55,.04) 70%,
        transparent 75%
    );

    border: 1px solid rgba(255,215,0,.2);

    box-shadow:
        0 0 25px rgba(255,215,0,.12),
        inset 0 0 15px rgba(255,255,255,.08);

    animation: floatingBubble 10s ease-in-out infinite;
}


/* Different bubble sizes/positions */

.bubble-1 {
    width: 80px;
    height: 80px;
    left: 5%;
    bottom: -100px;
    animation-duration: 12s;
}

.bubble-2 {
    width: 35px;
    height: 35px;
    left: 18%;
    bottom: -50px;
    animation-duration: 8s;
    animation-delay: 2s;
}

.bubble-3 {
    width: 120px;
    height: 120px;
    left: 30%;
    bottom: -150px;
    animation-duration: 15s;
    animation-delay: 1s;
}

.bubble-4 {
    width: 45px;
    height: 45px;
    left: 45%;
    bottom: -70px;
    animation-duration: 9s;
    animation-delay: 4s;
}

.bubble-5 {
    width: 65px;
    height: 65px;
    left: 55%;
    bottom: -80px;
    animation-duration: 11s;
    animation-delay: 3s;
}

.bubble-6 {
    width: 25px;
    height: 25px;
    left: 68%;
    bottom: -40px;
    animation-duration: 7s;
    animation-delay: 1s;
}

.bubble-7 {
    width: 100px;
    height: 100px;
    left: 78%;
    bottom: -120px;
    animation-duration: 14s;
    animation-delay: 5s;
}

.bubble-8 {
    width: 40px;
    height: 40px;
    left: 88%;
    bottom: -60px;
    animation-duration: 8s;
    animation-delay: 2s;
}

.bubble-9 {
    width: 55px;
    height: 55px;
    left: 12%;
    bottom: -70px;
    animation-duration: 13s;
    animation-delay: 6s;
}

.bubble-10 {
    width: 30px;
    height: 30px;
    left: 92%;
    bottom: -40px;
    animation-duration: 10s;
    animation-delay: 3s;
}


@keyframes floatingBubble {

    0% {
        transform: translateY(0) translateX(0) scale(.8);
        opacity: 0;
    }

    10% {
        opacity: .5;
    }

    30% {
        transform: translateY(-25vh) translateX(30px) scale(1);
    }

    60% {
        transform: translateY(-55vh) translateX(-40px) scale(1.1);
        opacity: .7;
    }

    80% {
        transform: translateY(-75vh) translateX(50px) scale(.9);
        opacity: .4;
    }

    100% {
        transform: translateY(-110vh) translateX(-20px) scale(.7);
        opacity: 0;
    }

}