// Thumb sizes
    '400x250'  => 'et-pb-post-main-image',
    '1080x675' => 'et-pb-post-main-image-fullwidth',
    '400x284'   => 'et-pb-portfolio-image',
    '510x382'   => 'et-pb-portfolio-module-image',
    '1080x9999' => 'et-pb-portfolio-image-single',
    '400x516'   => 'et-pb-gallery-module-image-portrait',
    '2880x1800' => 'et-pb-post-main-image-fullwidth-large',