Modify the navbar and reorganize the web design
Revert "Modify the navbar and reorganize the web design"

This reverts commit b68b00f1d4bfa817ebabd254bcdb3134b421e200.
Revert "Revert "Modify the navbar and reorganize the web design""

This reverts commit 52f3cda2708cb002def6b709a012e1d3c115f544.