user interface line icons collection. navigation, layout, , interaction, accessibility, responsiveness, usability

vector icon line sign navigation layout design interaction accessibility responsiveness usability functionality simplicity clarity consistency intuitiveness efficiency effectiveness engagement feedback flexibility aesthetics branding color font iconography animation hierarchy information architecture input output interruption learning curve progression task completion user journey flow visual wireframe signifiers skeuomorphism flat material responsive touchscreen mobilefirst desktopfirst microinteractions gestalt theory