Hello,
1) Prev/Next products order comes from the order of products in your DB. Unfortunately, we don’t have option to enable support of the custom order of the products there.
2) You can change that by custom CSS
.posts-nav-btn {
-webkit-transition: all .1s ease-out;
transition: all .1s ease-out;
-webkit-transition-delay: .1s;
transition-delay: .1s;
}
3) Provide us with a video of the issue for a better understanding.
4) Add the below code to limit the title height by lines
.posts-nav-btn .post-info .post-title {
height: 5ex;
overflow: hidden;
line-height: 2.5ex;
}
.next-post .post-details {
padding: 10px 0;
}
Regards