Conditional Tag for not working

Hi,

I’m really stuck on this one. It’s a bit over my head as I’m still pretty new to wordpress.

I’m trying to add a new class to a <div> that appears on 2 different pages, using a conditional tag, using the page id, so I can style one <div> separate from the other.

Here is the string which I am trying to add the new class to:

<div class="latest-deals-wrapper isotope-wrapper" data-isotope-cols="<?php echo esc_attr($atts['columns_count']); ?>" data-isotope-gutter="30">

Here is the class I am trying to add to the above string: plus-card-deal-cont

Here is the code I’m using which is probably way off.

<?php
if ( is_page('75') ):
	echo '<div class="latest-deals-wrapper isotope-wrapper plus-card-deal-cont" data-isotope-cols="<?php echo esc_attr($atts['columns_count']); ?>" data-isotope-gutter="30">';

else:
    echo '<div class="latest-deals-wrapper isotope-wrapper" data-isotope-cols="<?php echo esc_attr($atts['columns_count']); ?>" data-isotope-gutter="30">';
endif;
?>

Thanks in advance, Greg