diff --git a/img/square1.svg b/img/square1.svg
index 32eae0f..d3d89aa 100644
--- a/img/square1.svg
+++ b/img/square1.svg
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
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+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="283.464pt" height="481.89pt" viewBox="0 0 283.464 481.89" version="1.1">
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 <path style="stroke:none;" d="M 2.609375 -5.125 C 3.09375 -4.765625 3.84375 -4.203125 3.890625 -4.171875 C 3.953125 -4.140625 3.984375 -4.109375 4.0625 -4.109375 C 4.21875 -4.109375 4.328125 -4.265625 4.328125 -4.390625 C 4.328125 -4.5 4.28125 -4.578125 4.109375 -4.671875 L 2.71875 -5.328125 L 4.09375 -5.984375 C 4.28125 -6.078125 4.328125 -6.140625 4.328125 -6.265625 C 4.328125 -6.390625 4.21875 -6.546875 4.0625 -6.546875 C 3.984375 -6.546875 3.96875 -6.546875 3.703125 -6.34375 L 2.609375 -5.53125 L 2.75 -7.234375 C 2.75 -7.375 2.625 -7.484375 2.5 -7.484375 C 2.328125 -7.484375 2.21875 -7.359375 2.21875 -7.234375 C 2.21875 -7.125 2.359375 -5.75 2.375 -5.53125 L 1.140625 -6.4375 C 1 -6.546875 0.984375 -6.546875 0.921875 -6.546875 C 0.75 -6.546875 0.640625 -6.390625 0.640625 -6.265625 C 0.640625 -6.15625 0.6875 -6.078125 0.859375 -5.984375 L 2.265625 -5.328125 L 0.875 -4.671875 C 0.6875 -4.578125 0.640625 -4.515625 0.640625 -4.390625 C 0.640625 -4.375 0.640625 -4.109375 0.984375 -4.109375 L 2.375 -5.125 L 2.21875 -3.421875 C 2.21875 -3.28125 2.359375 -3.1875 2.484375 -3.1875 C 2.640625 -3.1875 2.75 -3.296875 2.75 -3.421875 C 2.75 -3.53125 2.625 -4.90625 2.609375 -5.125 Z M 2.609375 -5.125 "/>
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+<path style="stroke:none;" d="M 2.9375 -1.640625 L 2.9375 -0.78125 C 2.9375 -0.421875 2.90625 -0.3125 2.171875 -0.3125 L 1.96875 -0.3125 L 1.96875 0 C 2.375 -0.03125 2.890625 -0.03125 3.3125 -0.03125 C 3.734375 -0.03125 4.25 -0.03125 4.671875 0 L 4.671875 -0.3125 L 4.453125 -0.3125 C 3.71875 -0.3125 3.703125 -0.421875 3.703125 -0.78125 L 3.703125 -1.640625 L 4.6875 -1.640625 L 4.6875 -1.953125 L 3.703125 -1.953125 L 3.703125 -6.484375 C 3.703125 -6.6875 3.703125 -6.75 3.53125 -6.75 C 3.453125 -6.75 3.421875 -6.75 3.34375 -6.625 L 0.28125 -1.953125 L 0.28125 -1.640625 Z M 2.984375 -1.953125 L 0.5625 -1.953125 L 2.984375 -5.671875 Z M 2.984375 -1.953125 "/>
+</symbol>
+<symbol overflow="visible" id="glyph0-11">
+<path style="stroke:none;" d="M 2.9375 -6.375 C 2.9375 -6.625 2.9375 -6.640625 2.703125 -6.640625 C 2.078125 -6 1.203125 -6 0.890625 -6 L 0.890625 -5.6875 C 1.09375 -5.6875 1.671875 -5.6875 2.1875 -5.953125 L 2.1875 -0.78125 C 2.1875 -0.421875 2.15625 -0.3125 1.265625 -0.3125 L 0.953125 -0.3125 L 0.953125 0 C 1.296875 -0.03125 2.15625 -0.03125 2.5625 -0.03125 C 2.953125 -0.03125 3.828125 -0.03125 4.171875 0 L 4.171875 -0.3125 L 3.859375 -0.3125 C 2.953125 -0.3125 2.9375 -0.421875 2.9375 -0.78125 Z M 2.9375 -6.375 "/>
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