.wooqr-wrapper{text-align:center}
.wooqr-setting-wrapper{    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-evenly;
    align-items: center;
    max-width: 100%;
    margin: 100px auto;}
   .wooqr-setting-wrapper .left-panel {
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    border: 1px solid #ccc;
}
input[type=range]{-webkit-appearance:none;cursor:pointer;     background: #eee;}
input::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:3px;background-image:-webkit-gradient(linear,left top,left bottom,color-stop(0,#aaa),color-stop(1,#aaa))}
#wooqrimg-buffer{display:none}
.right-panel{position:-webkit-sticky;position:sticky;top:100px;align-self:flex-start}
div#qr-container img {max-width: 300px;height: auto !important;}