.bitcommerce .single-product button.button.alt.product_design_btn,
.bitcommerce .single-product button.button.alt.product_design_btn:hover {
    border-color: #999;
    background-color: #999;
}
.bitcommerce .single-product button.button.alt.product_design_btn:before {
    background-color: #000;
    border-radius: 4px;
}
.bitcommerce .single-product .product_design_reset{
    background-image: none;
    font-size: 16px;
    font-weight: normal;
    color: #999;
    border-color: transparent;

    -webkit-border-radius: 4px;
    border-radius: 4px;
    padding-top: 10px;
    padding-bottom: 10px;
    padding-left: 30px;
    padding-right: 30px;
}
.summary .product_design_preview{
    padding:10px 0;
}
.bitcommerce table.cart .product_design_preview,
.mainProductname  .product_design_preview{
    margin-left:-5px;
    padding-top:5px;
}
.product_design_preview img,
.bitcommerce table.cart .product_design_preview img{
    width:40px;
    margin-right:10px;
    cursor: pointer;
}
.download_product_design{
    cursor: pointer;
}
.big_preview{
    overflow: hidden;
}
.big_preview li，.big_preview ul {
    list-style: none;
    padding: 0;
    background-image: none;
    margin: 0;
}
.big_preview .flex-prev {opacity: 1;}
.big_preview .flex-next {opacity: 1;}