Improve API Cards Alignment in Management Portal

[piyumaldk]

In some screen widths, API cards have too much space in between and in some, API cards are overlapping.

Alignments should be fixed to be flexible with different screen widths and resolutions.

[piyumaldk]

After the fix

Sample Huge Screen

[piyumaldk]

After the fix

Sample Small Screen

[piyumaldk]

PR: #262