* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    /* outline: 1px solid red; */
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #000;
}

.container {
    position: relative;
    width: 100vw;
    height: 100vh;
    background-image: url(photo.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    /* filter: blur(1px); */
}

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

@keyframes float {
    0% {
        transform: translateY(0);
        opacity: 0;
    }

    20% {
        opacity: .7;
    }

    75% {
        opacity: .65;
    }

    90% {
        opacity: .5;
    }

    100% {
        transform: translateY(-100vh);
        opacity: 0;
    }
}