Improve font

tikz/max-pooling/max-pooling.tex

@@ -1,5 +1,6 @@
 \documentclass{standalone}
 \usepackage{amssymb}
+\usepackage{bm}
 \usepackage{tikz}
 \usetikzlibrary{arrows.meta}
 \usetikzlibrary{decorations.pathreplacing}
@@ -42,10 +43,7 @@
     \foreach \i in {\yMin,...,\yMax} {
         \draw [very thin,gray] (\xMin,\i) -- (\xMax,\i) node [left] at (\xMin,\i) {};
     }
-% [7, 9, 3, 5, 9, 4,
-%  0, 7, 0, 0, 9, 0,
-%  5, 0, 9, 3, 7, 5,
-%  9, 2, 9, 6, 4, 3]
+
     \foreach \i in {\xMin,2,...,\xMax} {
         \draw [thick,gray] (\i,\yMin) -- (\i,\yMax)  node [below] at (\i,\yMin) {};
     }
@@ -81,7 +79,7 @@
     \node at (5.5, 3.5) {3};
 
     \draw[draw=black,line width=12pt,-{Latex[length=9mm]}] (6.5, 2)  -- (9,2);
-    \node[font=\footnotesize\bfseries] at (7.7, 2.5) {$2\times 2$ max pooling};
+    \node[font=\footnotesize\bfseries] at (7.7, 2.5) {$\mathbf{2\times 2}$ max pooling};
 
     \foreach \i in {\xMinR,...,\xMaxR} {
         \draw [thick,gray] (\i,\yMinR) -- (\i,\yMaxR)  node [below] at (\i,\yMinR) {};