Reponsiveness complete

src/app/about-comp/about-comp.component.css

src/app/about-comp/about-comp.component.html

src/app/dashboard/dashboard.component.css

src/app/dashboard/dashboard.component.html

src/app/footer/footer.component.css

src/app/footer/footer.component.html

src/app/header/header.component.css

src/app/header/header.component.html

src/app/header/header.component.ts

src/app/home-page/home-page.component.css

src/app/login/login.component.css

src/app/login/login.component.html

src/app/register-component/register-component.component.css

src/app/register-component/register-component.component.html

src/styles.css