Different color contrast with same image

[bbwd345]

hi, sorry for my English…

This is how the image to show,

and here how to show it on Website,

my questions, why to change the black colour between the original image and the image which show on Website, and what can I to do to avoid it?

Here hot to call the image on Html,

<img id="logo" src="Photo/my-logo.png" alt=""/>

Here how to call the image on Css,

#logo {
    display: block;
    margin: 0;
    position: absolute;
    top: 2%;
    float: left;
    width: 15%;
    left: 0%;
    color:  #101010;

} 

Very Thanks for your help!

[bbwd345]

I found the solution!, …the verity in other Forum people say to me…

In Gimp do Do Filters > Generic > Erode , this will thicken up the black ,

and scale the image of as I will, how it to show on the Website…