using fonts in ionic 3 code example
Example: ionic install font
// in the fonts.scss file, add the font-face for each font file
@font-face {
font-family: 'Source Code Pro';
src: url('../assets/fonts/SourceCodePro-ExtraLight.ttf');
font-weight: 200;
font-style: normal;
}
// Import font.scss; add the following line to src > app > app.scss
@import '../theme/fonts';