How to expand image size to fit with screen

How to expand image size,I want reduce gap left and right of the imageimag

Can you explain more about your problem.

You have to delete ‘padding’ from “<ion-content padding>” in html file.

yes i have padding in ,
Now i removed padding from ,Image issue is fixed,but i want add padding for button.

To do this, add margins to your buttons!

.button{
margin-left: 10px;
margin-right: 10px;

}

i have added margin for button.Left margin working fine.But right margin not showing any result.Buttons are flowing at right side.
Any help.

You can change the width of buttons to smaller than 100%.

Correct, it is the padding directive that you needed to remove, but you might explore the https://ionicframework.com/docs/theming/css-utilities/ You find that you have a lot of other directives that can assist your layouts.