Delete border lines around all widgets

Hello,

I want to delete the lines around the widgets. I try wir css code but still not working. Also I can not change the color or size of the products. I also try this below. Thanks

.Test {
 ?font-size: 34pt;
	border: 0;
	background-color: ;
	padding: 0;
	white-space:nowrap;
}																
.woocommerce .product .desc .price{
   font-size: 35px!important;
 font-weight: 900!important;
}