title: Is it OK to use id attribute in component's html?
body: <p>Consider a component <code>c</code> with <code>html</code></p>
  
  <pre><code>&lt;form id="someID"[formGroup]="codeEditorForm" novalidate&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>with <code>css</code></p>
  
  <pre><code>#SomeID{
  color:grey;
  }
  </code></pre>
  
  <p>If <code>C</code> gets included in a parent component <code>P</code> two times then wouldn't the <code>id</code> get duplicated as well which should not happen in <code>html</code></p>
  
  <p>Question 1 - should I not use <code>id</code> in <code>Angular</code>?
  Question 2 - how shall I then write <code>css</code> rules without using <code>id</code>?</p>