.bigimg {
    width: 600px;
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    display: none;
    z-index: 20001;
    border: 10px solid #fff;
}

.mask {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-color: #000;
    opacity: 0.5;
    filter: Alpha(opacity=50);
    z-index: 20000;
    transition: all 1s;
    display: none
}

.bigbox {
    width: 840px;
    background: #fff;
    border: 1px solid #ededed;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    padding: 10px;
}

.bigbox > .imgbox {
    width: 400px;
    float: left;
    border-radius: 5px;
    overflow: hidden;
    margin: 0 10px 10px 10px;
}

.bigbox > .imgbox > img {
    width: 100%;
}

.imgbox:hover {
    cursor: zoom-in
}

.mask:hover {
    cursor: zoom-out
}

.bigimg:hover {
    cursor: move
}

.mask > img {
    position: fixed;
    right: 10px;
    top: 10px;
    width: 60px;
}

.mask > img:hover {
    cursor: pointer
}