Responsive fonts implementation

Signed-off-by: shawnsandy <shawnsandy04@gmail.com>
Updated responsive text

added screen 320 compatibility

Signed-off-by: shawnsandy <shawnsandy04@gmail.com>
Changed #page to #ui

fixed aside header

Signed-off-by: shawnsandy <shawnsandy04@gmail.com>
Changed mobile nav-icon

updated media queries for 320 screens sizes
changed header size to 100px;

Signed-off-by: shawnsandy <shawnsandy04@gmail.com>