Grid showcase mobile friendly

Hello, i noticed that a lot of members are facing the same problem with Grid showcase on mobile view that still shows up with big letters as it does on desktop mode. I saw a fix here https://stackideas.com/forums/menu-grid-layout-showcase-layout-problem can you please share the css code to apply it on my custom.css ?

Till now i used this but it's not working very well on mobile

.eb-blog-grid-showcase-content__title {
    font-size: 2.2vmax !important;
   	overflow:visible !important;
  	white-space:normal !important;
}