.zoom-area {
    margin: 50px auto;
    position: relative;
    cursor: crosshair;
}
.large {
    width: 175px;
    height: 175px;
    position: absolute;
    border-radius: 100%;
    box-shadow: 0 0 0 7px rgba(255, 255, 255, 0.85),
        0 0 7px 7px rgba(0, 0, 0, 0.25),
        inset 0 0 40px 2px rgba(0, 0, 0, 0.25);
    display: none;
}
.small {
    display: block;
}