You need to use @font-face rule to include the font
example
@font-face {
font-family: Yourcustomfontname;
src: url(YouCustomFontLink.ttf);
}
/* slide header */.swiper-slide .slide-container h4,
/* slide content */.swiper-slide .slide-container .ipsType_richText{
font-family: "Yourcustomfontname", Helvetica Neue, Helvetica, Arial, sans-serif;
}
---
Note: ttf browser supports http://caniuse.com/#feat=ttf
You should also get other formats of your font
to use multiple formats of your font
@font-face {
font-family: 'MyWebFont';
src: url('webfont.eot'); /* IE9 Compat Modes */
src: url('webfont.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
url('webfont.woff2') format('woff2'), /* Super Modern Browsers */
url('webfont.woff') format('woff'), /* Pretty Modern Browsers */
url('webfont.ttf') format('truetype'), /* Safari, Android, iOS */
url('webfont.svg#svgFontName') format('svg'); /* Legacy iOS */
}