Mobile portrait
Screen width between 478 and 360 pixels
All predefined class names that effect only this breakpoint start with: bp‑XXS__
It can for example be used to center align a text only on this smallest screens, or to go from a 6 column layout on desktop, to a 3 column layout on tablet, to a 2 column layout on mobile landscape, to finally a 1 column layout on mobile portrait format.