.section-sales {
  width: 70%;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-direction: column;
  gap: 50px;
  margin: 50px auto;
}

.categories-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
}

.categories-container > h1 {
  font-size: 1.5rem;
  font-weight: 500;
}

.products-container {
  width: 100%;
  transition: all 0.3s ease-in-out;
}

.container {
  --d: 6px; /* folded part */
  --c: lightgreen; /* color */
  --f: 16px; /* ribbon font-size */
  position: relative;
}
.container::before {
  content: attr(data-ribbon);
  font-size: var(--f);
  font-weight: 500;
  /* I : position & coloration */
  position: absolute;
  top: 0;
  right: 0;
  transform: translate(29.29%, -100%) rotate(45deg);
  transform-origin: bottom left;
  padding: 5px 35px calc(var(--d) + 5px);
  background: linear-gradient(rgba(0, 0, 0, 0.5) 0 0) bottom/100% var(--d) no-repeat var(--c);
  /* II : clipping */
  clip-path: polygon(
    0 0,
    100% 0,
    100% 100%,
    calc(100% - var(--d)) calc(100% - var(--d)),
    var(--d) calc(100% - var(--d)),
    0 100%
  );
  /* III : masking */
  -webkit-mask: linear-gradient(135deg, transparent calc(50% - var(--d) * 0.707), #fff 0) bottom left,
    linear-gradient(-135deg, transparent calc(50% - var(--d) * 0.707), #fff 0) bottom right;
  -webkit-mask-size: 300vmax 300vmax;
  -webkit-mask-composite: destination-in;
  mask-composite: intersect;
}