@font-face {
    font-family: 'ibm_plex';
    src: url('ibmplexserif-regular.woff2') format('woff2'),
         url('ibmplexserif-regular.woff') format('woff');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'ibm_plex';
    src: url('ibmplexserif-medium.woff2') format('woff2'),
         url('ibmplexserif-medium.woff') format('woff');
    font-weight: 600;
    font-style: normal;
}

@font-face {
    font-family: 'ibm_plex';
    src: url('ibmplexserif-bold.woff2') format('woff2'),
         url('ibmplexserif-bold.woff') format('woff');
    font-weight: 700;
    font-style: normal;
}