Hey Logang, try using this bit of CSS to remove the sidebar:
body.cart #sidebar-one-wrapper {
display:none;
}
All the other items are a bit more complicated. It doesn't look like they're using a default class naming convention with random classnames. But these bits of CSS might do the trick:
/*Borders*/
body.cart .cart-container .qrq0lfTEB{
border-top: 1px solid white;
border-bottom: 1px solid white;
}
/*Label Fonts*/
body.cart .cart-item-list-labels {
font-family: 'El Camino' !important;
}