body {
  padding: 0 0.25rem;
  margin: auto;
  max-width: 48rem;
  color: #e6ebef;
  background: #32343d;
  font-family: 'Roboto', 'Ubuntu', sans-serif;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
}

a {
  color: #a9caf1;
  text-decoration: none;
}
a:hover {
  color: #d5e5f8;
}

.post-item {
  padding: 3%;
  border-radius: 0.25rem;
  background: #282a33;
}
.post-item h2 a {
  color: #e6ebef;
}
.post-item div {
  /* Make the same value as in post-item's 3% padding.
   * 100 / 94 = ratio .post-item width / this div width,
   * 94 = 100% - (3% * 2), where
   * 3% is the padding in .post-item,
   * 3 * 2 = padding-left + padding-right = 3% + 3%
   */
  margin-top: calc(3% * 100 / (100 - 3 * 2));
}

a.button {
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;

  background: transparent;
  color: #e6ebef;
  border: 0.0625rem solid rgba(255, 255, 255, 0.2);

  transition:
    background-color 0.075s linear,
    border-color 0.1s linear;
}
a.button:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.1);
}
a.button:active {
  background: #5294e2;
  border-color: #5294e2;
}