.caption {
  color: #777;
  margin-top: 10px;
}
p code {
  white-space: inherit;
}
pre {
  word-break: normal;
  word-wrap: normal;
}
pre code {
  white-space: inherit;
}

.tips {
  padding: 1em 1em 1em 4em;
  margin-bottom: 10px;
  margin-left: 40px;
  border-radius: 10px;
  background: #fefefe 5px center/3em no-repeat;
  background-position: 5px 10px;
  position: relative;
}

.tipsp {
  padding: 1em 1em 1em 4em;
  margin-bottom: 10px;
  margin-left: 40px;
  border-radius: 10px;
  background: #fefefe 5px center/3em no-repeat;
  background-position: 5px 10px;
  position: relative;
}

.r {
  border: 2px solid #2369bd;
  background-image: url("images/r.png");
  position: relative;
  z-index: 1;
}
.python {
  background-repeat: no-repeat;
  border: 2px solid #ffde4d;
  background-image: url("images/p.png");
  position: relative;
  z-index: 1;
}