upload.css

.webuploader-container {
    position: relative;
}
.webuploader-element-invisible {
    position: absolute !important;
    clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
    clip: rect(1px,1px,1px,1px);
}

.cropper-wraper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
}
.clip-btn {
    position: absolute;
    left: 50%;
    bottom: 30px;
    margin-left: -35px;
    background: #999;
    padding: 10px 0;
    width: 70px;
    color: #fff;
    border-radius: 3px;
    font-size: 14px;
    text-align: center;
    cursor: pointer;
    z-index: 99;
}
.clip-btn:hover {
    background: #f0f0f0;
}