@font-face {
font-family: 'light';
src: url("OpenSans-Light.otf") format("opentype");
}

@font-face {
font-family: 'normal';
src: url("OpenSans-Regular.otf") format("opentype");
}

@font-face {
font-family: 'bold';
src: url("OpenSans-Bold.otf") format("opentype");
}

@font-face {
font-family: 'back';
src: url("OpenSans-Bold.otf") format("opentype");
}