Styling the slider problem

I am trying to style the wrapper as you can see below.

.caroufredsel_wrapper {
  display: block;
  text-align: start;
  float: none;
  position: relative;
  top: auto;
  right: auto;
  bottom: auto;
  left: auto;
  z-index: auto;
  width: 600px;
  height: 300px;
  margin: 0px;
  overflow: hidden;
}

But everytime i place that code into the custom css section in the option area of this plugin, the default css overrides the above. Could you advice where i can go to change it?

https://ww.wp.xz.cn/plugins/woocommerce-product-slider/