width: 500px;
height: 500px;
background:
  linear-gradient(0deg, rgb(42 37 38 / 1) 9.56%,  50%, rgb(158 144 112 / 1) 66.54%, rgb(134 104 91 / 1) 100%) -1px 1px / 503px 504px no-repeat no-repeat; /* New Background */