code: def css() -> str:
      """The CSS for HTML visualization of a `Module`."""
      return """.node {
    list-style-type:none;
  }
  .node ol {
    padding-left: 0;
    margin-left: 30px;
  }
  
  li.node {
    border-left: 1px solid black;
  }
  li.node:last-child {
    border-left: none;
  }
  /* Correctly align the elbow connector for the last child node. */
  li.node:last-child > span:first-child {
    margin-left: -5px;
  }
  .expander {
    cursor: pointer;
    font-family: monospace;
  }
  
  .expression {
    padding-left: 25px;
  }
  
  .tooltip-container .tooltip {
    visibility: hidden;
    background-color: #e3eaff;
    padding: 8px;
    margin-top: 1.4em;
    border-radius: 6px;
    position: absolute;
    z-index: 1;
  }
  
  .tooltip-container:hover .tooltip {
    visibility: visible;
  }
  
  .model-info {
    font-family: monospace;
  }
  
  .flops {
    color: grey;
  }
  
  .primitive {
    color: #3f48b0;
  }
  """
  
imports: from collections.abc import Mapping, Sequence
  import dataclasses
  import itertools
  import logging
  import os
  import sys
  from typing import Any, Callable, NamedTuple, Optional
  from haiku._src import summarise
  import jax
  import jax.core
label_desc: Use image node_id 14 for calling a global function with example usage: css() and returns: str