@font-face {
    font-family: 'Fira Sans';
    font-style: normal;
    font-weight: 900;
    src: url('firasans/fira-sans-v10-latin-900.eot'); /* IE9 Compat Modes */
    src: url('firasans/fira-sans-v10-latin-900.woff2') format('woff2'), /* Super Modern Browsers */
        url('firasans/fira-sans-v10-latin-900.woff') format('woff'), /* Pretty Modern Browsers */
        url('firasans/fira-sans-v10-latin-900.ttf') format('truetype'), /* Safari, Android, iOS */
        url('firasans/fira-sans-v10-latin-900.svg#FiraSans') format('svg'); /* Legacy iOS */
}