Space between Featured Image and Font

Hey WordPress Team

i had problem yesterday about featured image. Right under the Featured image, body text starting. I mean there is no space between featured image and paragraph in first of text. Can you please help me out ? do i have to change wordrpress header.php ?

here is the my website ; http://gezicenga.com/

if you just click one of the post, you will see there is no space between featured image and text