diff --git a/README.md b/README.md
index 2b81012..61d19d2 100644
--- a/README.md
+++ b/README.md
@@ -247,14 +247,10 @@ from types import FunctionType, MethodType, LambdaType, GeneratorType
 
 ### ABC-s
 **Abstract base classes introduce virtual subclasses, that don’t inherit from a class but are still recognized by isinstance().**
-```python
-from numbers import Integral, Rational, Real, Complex, Number
-<bool> = isinstance(<el>, Number)
-```
 
 ```python
+from numbers import Integral, Rational, Real, Complex, Number
 from collections.abc import Iterable, Collection, Sequence
-<bool> = isinstance(<el>, Iterable)
 ```
 
 
diff --git a/index.html b/index.html
index b457033..4c82d1d 100644
--- a/index.html
+++ b/index.html
@@ -319,10 +319,7 @@ Point(x=<span class="hljs-number">1</span>, y=<span class="hljs-number">2</span>
 <h3 id="abcs">ABC-s</h3>
 <p><strong>Abstract base classes introduce virtual subclasses, that don’t inherit from a class but are still recognized by isinstance().</strong></p>
 <pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> numbers <span class="hljs-keyword">import</span> Integral, Rational, Real, Complex, Number
-&lt;bool&gt; = isinstance(&lt;el&gt;, Number)
-</code></pre>
-<pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> collections.abc <span class="hljs-keyword">import</span> Iterable, Collection, Sequence
-&lt;bool&gt; = isinstance(&lt;el&gt;, Iterable)
+<span class="hljs-keyword">from</span> collections.abc <span class="hljs-keyword">import</span> Iterable, Collection, Sequence
 </code></pre>
 <h2 id="string"><a href="#string" name="string">#</a>String</h2>
 <pre><code class="python language-python hljs">&lt;str&gt;  = &lt;str&gt;.strip()                       <span class="hljs-comment"># Strips all whitespace characters from both ends.</span>