Puzzle Position

HTML

<div class="puzzle">
  <img src="https://i.ibb.co/f4cGc1x/Puzzle-einzeln-hell.png" class="puzzle_line_one">
  <img src="https://i.ibb.co/f4cGc1x/Puzzle-einzeln-hell.png" class="puzzle_line_one" style="bottom: 15%; left: -18%;">
  <img src="https://i.ibb.co/f4cGc1x/Puzzle-einzeln-hell.png" class="puzzle_line_one" style="bottom: 15%; left: -36%;">
  <img src="https://i.ibb.co/yB4FFgX/Puzzle-einzeln-dunkel.png" class="puzzle_line_two">
  <img src="https://i.ibb.co/yB4FFgX/Puzzle-einzeln-dunkel.png" class="puzzle_line_two" style="bottom: 15%; left: -18%;">
  <img src="https://i.ibb.co/yB4FFgX/Puzzle-einzeln-dunkel.png" class="puzzle_line_two" style="bottom: 15%; left: -36%;">
  <img src="https://i.ibb.co/f4cGc1x/Puzzle-einzeln-hell.png" class="puzzle_line_three">
  <img src="https://i.ibb.co/f4cGc1x/Puzzle-einzeln-hell.png" class="puzzle_line_three" style="bottom: 15%; left: -18%;">
  <img src="https://i.ibb.co/f4cGc1x/Puzzle-einzeln-hell.png" class="puzzle_line_three" style="bottom: 15%; left: -36%;">

</div>

CSS

.puzzle{
  display:flex;
  flex-flow:row wrap;
}
.puzzle img{
  position:relative;
  display:block; 
  flex-basis:33%;
  width:33%;
  height:auto;
}