title: how to add style to specific input type=text
body: <p>In my login page I have 3 input type=text elements.Now I want to apply style to one specific element.Like I want to apply style for the following element only...</p>
  
  <pre><code>&lt;input type="text" value="enter username or email or mobile number" id="username" name="username" /&gt;
  </code></pre>
  
  <p>when I am using css</p>
  
  <pre><code>input[type=text]
  </code></pre>
  
  <p>then that style is applying on all the three elements.i don't want that.I want to apply style on only one specific element.How to achieve this...</p>