title: How to increase the font size of one node label in tikz
body: <p>I have a tikz picture:</p>
  
  <pre class="lang-latex prettyprint-override"><code>\documentclass{standalone}
  \usepackage{tikz}
  \usetikzlibrary{positioning, shapes, shadows, arrows}
  \begin{document}
  \thispagestyle{empty}
  \tikzstyle{abstract}=[circle, draw=black, fill=white]
  \tikzstyle{labelnode}=[circle, draw=white, fill=white]
  \tikzstyle{line} = [draw, -latex']
  
  \begin{tikzpicture}[
      every node/.style={line width=2mm, circle split, draw, minimum size=5cm}
      ]
      \node (output) [thick, font=\fontsize{60}{60}\selectfont, thick] {$y_{(out)}$ \nodepart{lower} $y_{(in)}$};
      \node (hidden) [thick, font=\fontsize{60}{60}\selectfont, below=1cm of output] {$h_{(out)}$ \nodepart{lower} $h_{(in)}$};
      \node (input) [thick, font=\fontsize{60}{60}\selectfont, below=1cm of output, abstract, below=of hidden] {$x$};
  \draw[line width=1mm, -&gt;] (input) -- (hidden) node[font=\fontsize{60}{60}\selectfont, below=of output, labelnode, midway, right=2cm] {$W_1\, {\rm{, }} \,b_1$};
  \draw[line width=1mm, -&gt;] (hidden) -- (output) node[font=\fontsize{60}{60}\selectfont, below=of output, labelnode, midway, right=2cm] {$W_2 \, {\rm{, }} \,b_2$};
  
  \end{tikzpicture}
  
  
  \end{document}
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/Qiyg6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Qiyg6.png" alt="enter image description here"></a></p>
  
  <p>I would like to increase the font size of "x" in the bottom node. For some reason, altering the values in <code>font=\fontsize{60}{60}</code> does nothing (increasing or decreasing made no difference in the size). Any idea how I can make the x take up more area inside the node?</p>