Header – logo & site title on opposite sides (left/right)

Hi there,
I have a client site that requires the logo to be aligned right, however they’d also like the site title displayed, & aligned left.
I was just wondering what your recommendation would be on how to go about this.
Screenshot attached, I can provide login details if required.
I am absolute positioning the site title at present (using instructions found on this forum), however run into issues on smaller screens (it disappears off the screen on the left).
i guess i could use media queries – but am having difficulty getting this to work well.

.logo .subtext {
    position: absolute;
    top: 30%;
    right: 720%;
    z-index: 999;
    width: 400px;
}

Any advice much appreciated.
Thanks,
Jason