#drop-region {
    background-color: #fff;
    border-radius:20px;
    box-shadow:0 0 35px rgba(0,0,0,0.05);
    padding:60px 40px;
    text-align: center;
    cursor:pointer;
    transition:.3s;
    margin-left: 10px;
}
#drop-region:hover {
    box-shadow:0 0 45px rgba(0,0,0,0.1);
}

#image-preview {
    margin-top:20px;
}
#image-preview .image-view {
    display: inline-block;
    position:relative;
    margin-right: 13px;
    margin-bottom: 13px;
}
#image-preview .image-view img {
    max-width: 100px;
    max-height: 100px;
}
#image-preview .overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    right: 0;
    z-index: 2;
    background: rgba(255,255,255,0.5);
}

#left {
    margin-left: 10px;
}

#right {
    margin-left: 10px;
}