make custom styled checkbox
rename mixin for horizontal transparent gradient
add styles for vertical line division
write styles for error messages
increase bottom margin on .horiz-line
remove commented out styles
add .sign-in class to sign-in partial
add .registration class to registration partial
add horiz-lines to farsi dialog intro copy
remove bootstrap classes and contain forms in one div for cleaner centering
nest styles under the new container elements, center forms and use fixed widths for text inputs