body {
  background: #f2f2f3;
  line-height: 1.5;
  font-size: 14px;
}

pre {
  font-family: inherit;
  white-space: pre-wrap;
}

h1,
h2,
h3 {
  margin: 1.4em 0 1.1em;
  color: #222;
  font-weight: bold;
}

h1 {
  text-align: center;
  font-size: 22px;
}

h1:first-child {
  margin-top: 1em;
}

h2 {
  font-size: 18px;
}

h3 {
  font-size: 16px;
}

td,
th {
  border: 1px solid #222;
  text-align: left;
  padding: 8px;
}

a {
  color: #3f51b5;
}

img {
  display: block;
  width: 80%;
  margin: 0 auto 10px;
}

table {
  margin-bottom: 20px;
}

.p_container {
  width: 800px;
  max-width: 100%;
  margin: 40px auto;
  padding: 10px 23px;
  background: #fff;
  border-radius: 5px;
  color: #444;
}

@media screen and (max-width: 880px) {
  .p_container {
    width: 100%;
    margin: 0;
    border-radius: 0;
  }
}