I am trying to make a thickbox for youtube embed video. The current code is given below:
<?php add_thickbox(); ?>
<a id="cspd_yt_thickbox" href="https://www.youtube.com/embed/<?php echo $yt_obj->videoId($i); ?>?TB_iframe=true" class="thickbox">
<img style="display: inline; width: 250px;height: auto;" src="<?php echo $yt_obj->yt_thumb($i); ?>">
</a>
But both the thickbox and YouTube embed video is not responsive. please help me to solve the problem.
As you are using Wordpress. So you have an option to install Thickbox Plugin for Wordpress. Below mentioned thickbox is responsive and dynamically fit the Images / Videos
https://wordpress.org/plugins/responsive-thickbox/