Simple, but difficult to me. Image border property

[Frolic05]

Hi, I have to:
Add a CSS rule for your image that sets the border property to 2 pixels wide with a solid blue color

My try in CSS is :
#photo {
border-image-width: 2px;
color: #1a33e5;

The HTML for image is:
<div>
<img src="photo.jpg" id="photo">
</div>

The mistake: ✗ The border property is not set to 2 pixels (+ 2 tests)
Can anyone help me?

 

[BigDady]

#photo{border: 2px blue solid;}