[Azdaema]

In fonts.css I've got:

@font-face {
  font-family: "Helvetica Neue";
  font-weight: normal;
  font-style: normal;
  src: url(fonts/Helvetica-Neue-1.ttf);
}

I've got the .ttf file in the fonts section.

The texting CSS in stylesheet.css is:

/* Texting wrapper */
.texting {
  max-width: 300px;
  font-family: "Helvetica Neue", sans-serif;
  display: table;
  margin: auto;
  padding-left: 0.5em;
  padding-right: 0.5em;
}
/* All texts */
.text {
  margin: 0 0 0.5em;
  border-radius: 1em;
  padding: 0.5em 1em;
  max-width: 75%;
  clear: both;
  position: relative;
}
.text:after {
  content: "";
  position: absolute;
  bottom: 0;
  width: 0.5em;
  height: 1em;
}
/* Outgoing (sent from this phone) */
.out {
  float: right;
  background: #1289fe;
  color: #FFF;
}
.out:after {
  right: -0.5em;
  border-left: 0.5em solid #1289fe;
  border-bottom-left-radius: 1em 0.5em;
}
/* Incoming (reply from other person) */
.in {
  float: left;
  background: #e5e5ea;
  color: #000;
}
.in:after {
  left: -0.5em;
  border-right: 0.5em solid #e5e5ea;
  border-bottom-right-radius: 1em 0.5em;
}