#branding img {
  width: 100%;
}
#branding hgroup img {
  width: 520px;  /* the logo */
}

@media (max-width: 650px) 
{
#branding hgroup img {
  width: 100%;  /* the logo */
}

  .singular .entry-title {
    line-height: inherit;
  }
  .singular.page .hentry {
    padding: 0;
  }
}