one of the ways to create a side scrolling feature is to set the max width of a container to the width you want (in this case the width of your mobile device) and then use the overflow functions in css to activate a scrolling style:
try it and play around with it :)
.scroll-mobile{
max-width: 90vw; //this is to set the maximum width to 90% of the device width
overflow-y: scroll; //this should activate a scroll bar in horizontal direction
}