.sidebar {
  max-width: 45%;
}

.post {
  text-align: justify;
}

.panel-heading {
  text-align: center;
}

.has-jax {
  font: inherit; 
  font-size: 100%;
  background: inherit;
  color: inherit;
  border: inherit;
  padding: inherit;
  border-radius: inherit;
  white-space: inherit;
  box-sizing: inherit; 
}