Twenty Fifteen mobile issues: tagline and images

You need to add custom css to do these changes this can be either by creating a child theme or using plugins.
How to Add
1) How to display site tagline — This is explained in the above link
2)Right-Aligned image
you need to custom css that image this can be found under advanced option while editing image and then target it.

let’s assume you have added my-mobile-class class for image
then add the following css .

@media screen and (max-width: 38.74em) {

.my-mobile-class {
    float:left;
    margin: 0.4em 1.6em 1.6em 0;
}

}

Thank you bravokeyl! You solved my 1st issue beautifully and the tagline is now displayed in mobile.

The right-aligned image is partly correct. I added the css and changed the image on this page: https://sitwithabrit.com/about/. When I view on my mobile the text still has the first two words next to the image. I would prefer that the text go under the image. Can you help with this tweak?

Thanks again!

@media screen and (max-width: 38.74em) {

img.my-mobile-class {
    float:none;
    margin: 0 auto;
    width:100%; 

}
}

There are many ways to do it.. the above is the simplest one but this makes image to take full width of the mobile view..

Thanks! That did the trick.