.pt-integral {
  display: inline-grid;
  grid-template-columns: 0.8em auto;
  grid-template-rows: 0.8em 2em 0.8em;
  font-size: 1em;
  -moz-column-gap: 0.3em;
       column-gap: 0.3em;
  vertical-align: middle;
}
.pt-integral__upper-limit {
  grid-column: 2;
  grid-row: 1;
  font-size: 0.8em;
}
.pt-integral__lower-limit {
  grid-column: 2;
  grid-row: 3;
  font-size: 0.8em;
  display: flex;
  align-items: end;
}
.pt-integral__symbol {
  grid-column: 1/2;
  grid-row: 1/4;
  background: url(../img/math-symbols/integral.svg) center/contain no-repeat;
}

.pt-fraction {
  display: inline-grid;
  grid-template-columns: max-content;
  grid-template-rows: auto 0.06em auto;
  vertical-align: middle;
  font-size: 1em;
  position: relative;
}
.pt-fraction::before {
  content: "";
  grid-column: 1;
  grid-row: 2;
  background-color: #000;
}
.pt-fraction__upper, .pt-fraction__lower {
  font-size: 0.8em;
  display: flex;
  justify-content: center;
  align-items: center;
}
.pt-fraction__upper {
  grid-column: 1;
  grid-row: 1;
}
.pt-fraction__lower {
  grid-column: 1;
  grid-row: 3;
}

.pt-sigma {
  display: inline-grid;
  grid-template-columns: 2.5em;
  grid-template-rows: auto 2.5em auto;
  vertical-align: middle;
}
.pt-sigma__upper-limit, .pt-sigma__lower-limit {
  font-size: 0.8em;
  text-align: center;
}
.pt-sigma__upper-limit {
  grid-column: 1;
  grid-row: 1;
}
.pt-sigma__lower-limit {
  grid-column: 1;
  grid-row: 3;
}
.pt-sigma__symbol {
  grid-column: 1;
  grid-row: 2;
  background: url(../img/math-symbols/sigma.svg) center/100% 100% no-repeat;
}

.pt-sup {
  display: inline-block;
  transform: translateY(-0.5em);
  font-size: 0.7em;
}

.pt-sub {
  display: inline-block;
  transform: translateY(0.5em);
  font-size: 0.7em;
}

.pt-bracket {
  display: inline-block;
  vertical-align: middle;
  position: relative;
  padding: 0 1em;
}
.pt-bracket::before, .pt-bracket::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1em;
  background-repeat: none;
  background-position: center;
  background-size: 100% 100%;
}
.pt-bracket::before {
  left: 0;
  background-image: url(../img/math-symbols/bracket_round_left.svg);
}
.pt-bracket::after {
  right: 0;
  background-image: url(../img/math-symbols/bracket_round_right.svg);
}
.pt-bracket--system::before {
  background-image: url(../img/math-symbols/bracket_system_left.svg);
}
.pt-bracket--system::after {
  display: none;
}

.pt-matrix {
  border-collapse: collapse;
  font-size: 1em;
}
.pt-matrix td {
  padding: 0.25em 0.5em;
  text-align: center;
}/*# sourceMappingURL=puretex.css.map */