.image-container {
    position: relative;
    width: 550px;
    height: 350px;
    overflow: hidden;
}

.main-image {
    width: 100%;
    height: 100%;
}

.zoom-image {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 1px solid #ccc;
    display: none;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    z-index: 999;
}