Mojave issues on mobile with awful text and parallax

Is there anything that can be done to fix whatever nightmare this is?

Is it possible to set the dimensions for the image so that it maintains the widescreen look on mobile? 

EDIT: I've figured out how to make the banner image the correct dimensions on mobile, the lower parallax banner is still giving me issues though. And now the text the still big overtop of the smaller image. 

Website is westendswords.com password is occsfamily

For reference this is how it looks on desktop

Add to Design > Custom CSS > Save & reload the site

/* Resize Parallax Image - Text Mobile */
@media screen and (max-width:640px) {
body.homepage .Parallax-item img {
    width: 100% !important;
    height: auto !important;
    left: 0 !important;
    top: 0 !important;
}
body.homepage .Parallax-item figure {
    transform: unset !important;
}
/* in person */
section#intro {
    min-height: unset !important;
    height: 180px;
}
section#intro h1 {
    font-size: 20px;
}
/* new to fencing */
section#new {
    min-height: unset !important;
    height: 200px !important;
}
section#new h1 {
    font-size: 24px;
}
/* last section */
section#join {
    min-height: unset !important;
    height: 180px;
}
}