Change fonts to Candara and Calibri


I have changed the default font using these codes:

body {
font-family: “Calibri”;
font-size: 18px;
line-height: 1.42857143;
color: #333;
background-color: #fff;

/Header font change/
h1, h2, h3, h4, h5, h6 {
font-family: Candara;
color: #fefefe;

It worked perfectly on my own devices but it seems that on some computers (perhaps Apple) neither the chosen fonts nor the themes default font is shown, but instead a Georgia kind of font is shown.
I thought both Candara and Calibri are web safe fonts, so that I could safely use them. Is there a way to make sure, that they are shown on all computers (macs)?

Kind regards,


Hi there

May I see it? please provide a link to the page and screenshot of the problem