Is there a smart and simple way to float elements from bottom left corner to top right corner?

My solution whith display:grid is too static and has fix cols and not more than 10 items. I`m searching for a smart solution which works with multiple cols and reams of elements.

<div class="cart">
  <div class="box">
    <div class="egg">1</div>
    <div class="egg">2</div>
    <div class="egg">3</div>
    <div class="egg">4</div>
    <div class="egg">5</div>
    <div class="egg">6</div>
    <div class="egg">7</div>
    <div class="egg">8</div>
  </div>
</div>

.cart {
  border: 5px solid;
  padding: 8px;
  width: 240px;
  height: 200px;
  display: flex;
  align-items: flex-end;
}
.box {
  background-color: lightgray;
  padding: 4px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  grid-template-areas: 
    "box6 box7 box8 box9 box10"
    "box1 box2 box3 box4 box5";
}
.egg {
  width: 40px;
  aspect-ratio: 3 / 4;
  background-color: sandybrown;
  border-radius: 100% 100% 100% 100% / 120% 120% 80% 80%;
  box-shadow: inset -4px -8px 20px brown;
  font-family: sans-serif;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
}
.egg:nth-child(1) { grid-area: box1; }
.egg:nth-child(2) { grid-area: box2; }
.egg:nth-child(3) { grid-area: box3; }
.egg:nth-child(4) { grid-area: box4; }
.egg:nth-child(5) { grid-area: box5; }
.egg:nth-child(6) { grid-area: box6; }
.egg:nth-child(7) { grid-area: box7; }
.egg:nth-child(8) { grid-area: box8; }
.egg:nth-child(9) { grid-area: box9; }
.egg:nth-child(10) { grid-area: box10; }