how to shift/stretch a picture or gif in the profile description. html problem?

[LittleStormMusic]

help!tell me how to move the gif to the right so it’s centered, or stretch it to take up all the space

[StudioProject]

the width must be at least 616 pixels

[LittleStormMusic]

Now I have this(

[StudioProject]

reason: deleting a previously inserted image, it is necessary to completely replace the html code

[StudioProject]

or change the name of the image

[payportalquick]

Fixed the width .