Tip button on images needs extra padding

[srirambv]

Description

Tip button on images needs extra padding

Steps to Reproduce

1. Open an image that is tweeted
2. Wait for the tip button to show up
3. Button appears right next to the drop down with more twitter option

Actual result:

Expected result:

Should have enough padding so that when the screensize is reduced doesn't overlap on the dropdown

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	0.67.55 Chromium: 75.0.3770.38 (Official Build)nightly (64-bit)
Revision	3860105745f2b12537da9e9f048f14c3f52ba970-refs/branch-heads/3770@{#618}
OS	Linux

Version/Channel Information:

• Can you reproduce this issue with the current release? No
• Can you reproduce this issue with the beta channel? No
• Can you reproduce this issue with the dev channel? No
• Can you reproduce this issue with the nightly channel? Yes

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? No
• Does the issue resolve itself when disabling Brave Rewards? No
• Is the issue reproducible on the latest version of Chrome? No

Miscellaneous Information:

cc: @mandar-brave @alexwykoff @jenn-rhim @NejcZdovc