There are two issues related to this topic:

The pack icon is blurred when it has a low resolution:

In the context of Minecraft addons it is common to have pack icons with low resolutions (like the default icon that is exported by the official Blockbench Entity Wizard). Because the new OreUI system is web-based, images default to being blurred. A possible solution might be to add the CSS property image-rendering: pixelated to the image element.

The description and name of the pack is unformatted:

The addon system allows packs to format there name and description with formatting codes and the \n control character to inject new lines. In OreUI screens these formatting options get ignored and new lines get replaced with a space. A possible solution might be to add the CSS property white-space: preserve-breaks to the text elements.