Is it possible to add Styling to homebrew, i trying to add a table but I've been unable to format it with a border.

Example below.

<p><span style="font-family: verdana, geneva, sans-serif;"><strong>Dread Realms</strong></span></p>
<table>
<tbody>
<tr>
<th><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Roll</span></th>
<th><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Character</span></th>
<th><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Saving Throw</span></th>
<th><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC</span></th>
<th><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Failure Effect</span></th>
<th><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Flavour</span></th>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">1</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Roux</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Strength or Charisma</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Movement Speed Halved if the roll is 5 or more below dc movement speed is 0 you are also under the effects of silence until your next turn</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Being confined alone without a voice, unable to help.</span></td>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">2</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Garret</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Strength or Charisma</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Healing is supressed all healing effects are halved until your next turn</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">&nbsp;</span></td>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">3</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Eleak</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Dexterity or Intelligence</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Supporting spells are suppressed until your next turn</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">&nbsp;</span></td>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">4</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Grave Dirt</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Strength or Intelligence</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Resistances are switched, becoming vulnerabilities until your next turn</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">&nbsp;</span></td>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">5</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Hesior</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Dexterity or Wisdom</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Spell range is reduced have 50% until the start of your next turn</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">&nbsp;</span></td>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">6</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Arlowen</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Strength or Dexterity</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">All attacks are made at disadvantage until your next turn</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">&nbsp;</span></td>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">7</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Hestia</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Strength or Constitution</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Any one who fails a saving throw are only able to make one action not reactions or bonus actions until your next turn</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">&nbsp;</span></td>
</tr>
<tr>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">8</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Dread Realm</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Lowest Stat</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">DC22</span></td>
<td><span style="font-family: verdana, geneva, sans-serif; border: 1px, solid;">Anyone who fails a save takes 12d6 necrotic damage or half as much on a save, the floor becomes seeded with necrotic energies causing 1d6 damage at the end of each turn, this effect last 2 rounds</span></td>
<td>
<p><span style="font-family: verdana, geneva, sans-serif;">&nbsp;</span></p>
<p>&nbsp;</p>
<p>&nbsp;</p>
</td>
</tr>
</tbody>
</table>
<hr />
<p>&nbsp;</p>
<hr />
<p>&nbsp;</p>

I believe you're limited to the formatting options that are currently available in the RTF editor + TABLES. I don't see borders being an option in the RTF editor so they may bot be supported.

Suggestion, make your first table row a <thead> instead of a <tbody> to give your table's header more differentiation from the rest of the rows.

thanks will do hopefully they bring some more styling options in soon

Seeing this code makes me cry. You should delete the styles on all of your text, than put this code in: 

<style>
    span {
        font-family: verdana, geneva, sans-serif;
        border: 1px, solid;
    }
</style>

Quote from VeldrinOfTheShadows >>

Seeing this code makes me cry. You should delete the styles on all of your text, than put this code in: 

<style>
    span {
        font-family: verdana, geneva, sans-serif;
        border: 1px, solid;
    }
</style>

I don't believe the <style> tag is supported in the RTF editor.

It can do some styling I believe, but if you force it to do something it doesn’t like it’ll possibly cause glitches and will definitely prevent exporting the character to PDF.