Refacto components to fit with global styling file

[MGREMY]

Refacto components :

• [x] accordion
• [x] alert
• [x] badge
• [x] breadcrumb
• [x] button
• [x] dark-theme-toggle
• [x] dropdown
• [x] form-field
• [x] indicator
• [x] modal
• [x] navbar
• [x] sidebar