modify brand color

Signed-off-by: Micky Ching <mickyching@gmail.com>
add algorithm notes

Signed-off-by: Micky Ching <mickyching@gmail.com>
update website navi

Signed-off-by: Micky Ching <mickyching@gmail.com>
update emacs notes

Signed-off-by: Micky Ching <mickyching@gmail.com>
remove unused wrapper

Signed-off-by: Micky Ching <mickyching@gmail.com>
add tags for block layer

Signed-off-by: Micky Ching <mickyching@gmail.com>
modify header bold depth

Signed-off-by: Micky Ching <mickyching@gmail.com>