Hi,
On a big screen lines of text get very long. Can we limit the width?

I'm not even on a 4k monitor, but on my 1920px wide monitor there fit ~270 characters per line in confluence (in edit mode, which is worst due to lacking sidebars).
Recommended for readability are 50-60 characters per line.

For people stumbeling over the same issue, here is some CSS you can paste into a browser extention like stylish to make it a bit more readable for yourself at least (effects editor and normal view):

.wiki-content:not(.comment){
    max-width:1008px;
    margin:auto !important;
}

.wiki-content p{
    max-width: 400px;
}
.wiki-content p img{
    height: auto;
}
.wiki-content li{
    width: 400px;
}