title: How to include a custom CSS file in TYPO3
body: <p>I need to build an Extension in typo3 7.6.I include a css file in setup.txt using</p>
  
  <pre><code>page.IncludeCSS = Ext.Path_to_css_file.css
  </code></pre>
  
  <p>But the styles in my css file is override by some other custom styles.How can I prevent this.Any Idea? I am new to typo3.Please help me.Thank you in advance.</p>