diff --git a/Life.ipynb b/Life.ipynb
index 6851692..ceaa012 100644
--- a/Life.ipynb
+++ b/Life.ipynb
@@ -27,18 +27,18 @@
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;E&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;E&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td ></td>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
@@ -65,14 +65,14 @@
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;L\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td ></td>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  </tr>\n",
@@ -101,14 +101,14 @@
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td ></td>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "  </tr>\n",
@@ -164,7 +164,7 @@
     "    <td class=\"tg-031e\">(x+1, y-1)\n",
     "  <tr style=\"height:3em\">\n",
     "    <td class=\"tg-031e\">(x-1, y)</td>\n",
-    "    <td bgcolor=\"lightgrey\">(x, y)</td>\n",
+    "    <td style=\"background-color:lightgrey\">(x, y)</td>\n",
     "    <td class=\"tg-031e\">(x+1, y)</td>\n",
     "  <tr style=\"height:3em\">\n",
     "    <td class=\"tg-031e\">(x-1, y+1)</td>\n",
@@ -195,18 +195,18 @@
     "    <td >&nbsp;&nbsp;1&nbsp;\n",
     "    <td >&nbsp;&nbsp;1&nbsp;\n",
     "    <td >&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;&nbsp;&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;&nbsp;&nbsp;\n",
     "    <td >&nbsp;&nbsp;1&nbsp;\n",
     "  <tr>\n",
     "    <td>&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;2&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;2&nbsp;\n",
     "    <td >&nbsp;&nbsp;4&nbsp;\n",
     "    <td >&nbsp;&nbsp;2&nbsp;\n",
     "    <td >&nbsp;&nbsp;1&nbsp;\n",
     "  <tr>\n",
     "    <td >&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;2&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;2&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;2&nbsp;\n",
     "    <td >&nbsp;&nbsp;1&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "  </tr>\n",
@@ -235,14 +235,14 @@
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td>&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;2&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;2&nbsp;\n",
     "    <td >&nbsp;&nbsp;3&nbsp;\n",
     "    <td >&nbsp;&nbsp;1&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td >&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;2&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;2&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;2&nbsp;\n",
     "    <td >&nbsp;&nbsp;1&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "  </tr>\n",
@@ -271,14 +271,14 @@
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td>&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;3&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;3&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;3&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;3&nbsp;\n",
     "    <td >&nbsp;&nbsp;2&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "  <tr>\n",
     "    <td >&nbsp;&nbsp;2&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;3&nbsp;\n",
-    "    <td bgcolor=lightgrey>&nbsp;&nbsp;3&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;3&nbsp;\n",
+    "    <td style=\"background-color:lightgrey\">&nbsp;&nbsp;3&nbsp;\n",
     "    <td >&nbsp;&nbsp;2&nbsp;\n",
     "    <td >&nbsp;&nbsp;&nbsp;\n",
     "  </tr>\n",