Fix: Fixed layout collapse in Safari browser

[nzsys]

Description

Fixed a layout issue in the admin panel caused by float: left properties.

Solution

• Added WordPress standard wp-clearfix class to the parent element
• Resolved unintended layout collapse caused by float properties

Verification

• Confirmed that the layout displays correctly in the admin panel
• Verified no negative impact on other elements

[takayukister]

Nice patch. Thank you.