Blox - Textblox margin

Hi,

I would need you help regarding Blox. I am a beginner in Blox and would need you help creating some title banners for my dashboard

I want to use Blox as i want to adjust the height of these banners.

{

"style": "",

"script": "",

"titleStyle": [

{

"display": "none"

}

],

"showCarousel": true,

"body": [

{

"type": "TextBlock",

"text": "Y to Y comparison",

"style": {

"text-align": "center",

"color": "white",

"font-weight": "bold",

"backgroundColor": "#022C5E",

"font-size": "32px"

}

}

],

"actions": []

 

this is the result i got 

 

 

How do i do to have all my block in blue (so remove the white area)?

Thank you