_includes/meng/card.html
<style>
.k-list-card{
background-color:{{site.data.meng.card.background_color}};
}
.k-container.mdui-card{
background-color:{{site.data.meng.card.background_color}};
}
.k-friend .mdui-card{
background-color:{{site.data.meng.card.background_color}};
}
.k-post-media{
opacity: {{site.data.meng.card.card_img_opacity}};
}
</style>