Re-size a YouTube videos Iframe seems not Working
<p>I just copy the embed code from the youtube videos and I need to use the youtube vidoes for advertisements </p>

<p>code from youtube</p>

<pre><code>&lt;iframe width="350" height="260" src="https://www.youtube.com/embed/_K9VcuVmDFg" frameborder="0" allowfullscreen&gt;&lt;/iframe&gt;
</code></pre>

<p>I have edited and updated  the code and it looks like this</p>

<pre><code> &lt;div class="video"&gt;             
&lt;iframe src="https://www.youtube.com/embed/_K9VcuVmDFg" frameborder="0" allowfullscreen&gt;&lt;/iframe&gt;
    &lt;/div&gt;
</code></pre>

<p>I have written my CSS and seems it does not have any effect on  the Size of the YouTube on web page</p>

<p>CSS</p>

<pre><code>.video{
    width:67px;
    height:80px;
}
</code></pre>

<p>As i increase the size the video stays normal.How to re-size the videos to look big in size? </p>