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- frontend developement (HTML5, CSS3, JavaScript, ReactJS+MobX+TypeScript); - adaptive, semantic, accessibility, responsive, mobile-first, crossbrowser layout; - BEM methodology; - Sass, Less preprocessors; - Gulp, Webpack; - Git - Github - Gitlab - Bitbucket; - Figma, Zeplin, Avocode; - optimization, Lighthouse, Core Web Vitals;