.bubbles {
    position: relative;
    background: #f6f6f6;
}

.bubble-wrap {
    overflow: hidden;
    height: 400px;
    background: #f6f6f6;
}

.bubble {
    position: absolute;
    width: 400px;
    height: 400px;
    margin-right: 20px;
    background: white;
    box-shadow:
            0 15px 35px rgba(0, 0, 0, 0.1),
            0 3px 10px rgba(0, 0, 0, 0.1);
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

.bubble-img {
    height: 60%;
    margin: 0 auto;
    display: block;
}