burger menu positioning

Hi
I am looking to align the burger menu to the left and another button on the right hand side. I have managed to get the slide out to appear to the left but the burger and the x are staying centered.
This is what i used to get the menu opening on the right

.html_av-overlay-side .av-burger-overlay-scroll {
right: auto;
left: 0;
}
.html_av-overlay-side .av-burger-overlay-scroll {
-webkit-transform: translateX(-350px);
transform: translateX(-350px);
}