* { box-sizing: border-box; } .fast-spin { animation: a 500ms infinite linear; } h1, h2, h3, h4, h5, h6 { font-family: "Fira Sans", sans-serif; font-weight: 700; margin: 0; } body, p, a, li, blockquote { font-family: "Roboto", sans-serif; font-weight: 400; }