.content {
  margin: 0 auto;
  width: calc(100% - 30px);
  max-width: min(810px,100%);
}

.content img {
  display: block;
  margin: auto;
  margin-left: 50%;
  transform: translateX(-50%);
}

blockquote {
  margin: 0;
}

blockquote p {
  padding: 15px;
  background: #eee;
  border-radius: 5px;
}

blockquote p::before {
  content: '\201C';
}

blockquote p::after {
  content: '\201D';
}