@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-Thin.ttf);
    font-weight: 100;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-ThinItalic.ttf);
    font-weight: 100;
    font-style: italic;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-ExtraLight.ttf);
    font-weight: 200;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-ExtraLightItalic.ttf);
    font-weight: 200;
    font-style: italic;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-Light.ttf);
    font-weight: 300;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-LightItalic.ttf);
    font-weight: 300;
    font-style: italic;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-Regular.ttf);
    font-weight: 400;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-Italic.ttf);
    font-weight: 400;
    font-style: italic;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-Medium.ttf);
    font-weight: 500;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-MediumItalic.ttf);
    font-weight: 500;
    font-style: italic;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-SemiBold.ttf);
    font-weight: 600;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-SemiBoldItalic.ttf);
    font-weight: 600;
    font-style: italic;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-Bold.ttf);
    font-weight: 700;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-BoldItalic.ttf);
    font-weight: 700;
    font-style: italic;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-ExtraBold.ttf);
    font-weight: 800;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-ExtraBoldItalic.ttf);
    font-weight: 800;
    font-style: italic;
}
@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-Black.ttf);
    font-weight: 900;
}

@font-face {
    font-family: 'Source Serif 4';
    src: url(SourceSerif4-BlackItalic.ttf);
    font-weight: 900;
    font-style: italic;
}