There is another skull symbol on the box.
Look closely to the card from both sides – they are connected.
Find the inscription “START” on one of the box’s walls.
Follow the arrow sign I -> II
Letters are representing numbers.
You should start opening the locker by solving the puzzle on the bottom.
Push the wall with skull (I) to the direction of skull (II), it will open the space.
a=1 b=2 ….
Symbols on the sliding elements are similar to the symbols on the bottom. You need to arrange all sliding elements to fit symbols on the bottom.
Find the way to move other walls.
Type following URL in the browser: http://126.96.36.199/
There are several methods to do this, arranging by: lines diagonal rotation Here is explanation of one the methods: