Add followiong code in Appearance=> Customize=> Additional CSS box:
/* vietnamese */
@font-face {
font-family: 'Dancing Script';
font-style: normal;
font-weight: 400;
src: local('Dancing Script Regular'), local('DancingScript-Regular'), url(https://fonts.gstatic.com/s/dancingscript/v9/DK0eTGXiZjN6yA8zAEyM2fRMc6C39aem-aUPzsV2c2w.woff2) format('woff2');
unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
}
/* latin-ext */
@font-face {
font-family: 'Dancing Script';
font-style: normal;
font-weight: 400;
src: local('Dancing Script Regular'), local('DancingScript-Regular'), url(https://fonts.gstatic.com/s/dancingscript/v9/DK0eTGXiZjN6yA8zAEyM2e87R-l0-Xx_7cYc0ZX1ifE.woff2) format('woff2');
unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+20A0-20AB, U+20AD-20CF, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
font-family: 'Dancing Script';
font-style: normal;
font-weight: 400;
src: local('Dancing Script Regular'), local('DancingScript-Regular'), url(https://fonts.gstatic.com/s/dancingscript/v9/DK0eTGXiZjN6yA8zAEyM2Ud0sm1ffa_JvZxsF_BEwQk.woff2) format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2212, U+2215;
}
.home #main .entry-container .entry-title {
font-family: 'Dancing Script', cursive;
font-size: 20px;
}
Let me know how it goes.
Regards,
Pratik