post_grid_layout_element_css_{id}

post_grid_layout_element_css_{id} used to render CSS or style output for each element on the grid item, where  {id} should replace with element id, like title, excerpt, and etc

Sample code for excerpt 

add_action('post_grid_layout_element_css_excerpt', 'post_grid_layout_element_css_excerpt', 10);
function post_grid_layout_element_css_excerpt($args){


    $index = isset($args['index']) ? $args['index'] : '';
    $element = isset($args['element']) ? $args['element'] : array();
    $layout_id = isset($args['layout_id']) ? $args['layout_id'] : '';

    $color = isset($element['color']) ? $element['color'] : '';
    $font_size = isset($element['font_size']) ? $element['font_size'] : '';
    $font_family = isset($element['font_family']) ? $element['font_family'] : '';
    $margin = isset($element['margin']) ? $element['margin'] : '';
    $text_align = isset($element['text_align']) ? $element['text_align'] : '';

    $css = isset($element['css']) ? $element['css'] : '';
    $css_hover = isset($element['css_hover']) ? $element['css_hover'] : '';
    ?>
    <style type="text/css">
        .layout-<?php echo $layout_id; ?> .element_<?php echo $index; ?>{
        <?php if(!empty($color)): ?>
            color: <?php echo $color; ?>;
        <?php endif; ?>
        <?php if(!empty($font_size)): ?>
            font-size: <?php echo $font_size; ?>;
        <?php endif; ?>
        <?php if(!empty($font_family)): ?>
            font-family: <?php echo $font_family; ?>;
        <?php endif; ?>
        <?php if(!empty($margin)): ?>
            margin: <?php echo $margin; ?>;
        <?php endif; ?>
        <?php if(!empty($text_align)): ?>
            text-align: <?php echo $text_align; ?>;
        <?php endif; ?>
        <?php if(!empty($css)): ?>
        <?php echo $css; ?>
        <?php endif; ?>
        }
        .layout-<?php echo $layout_id; ?> .element_<?php echo $index; ?>:hover{
        <?php if(!empty($css_hover)): ?>
        <?php echo $css_hover; ?>
        <?php endif; ?>
        }
        .layout-<?php echo $layout_id; ?> .element_<?php echo $index; ?> a{
        <?php if(!empty($color)): ?>
            color: <?php echo $color; ?>;
        <?php endif; ?>
        <?php if(!empty($font_size)): ?>
            font-size: <?php echo $font_size; ?>;
        <?php endif; ?>
        <?php if(!empty($font_family)): ?>
            font-family: <?php echo $font_family; ?>;
        <?php endif; ?>
        }
    </style>
    <?php
}