.CodeRay pre {
  background-color: #232323;
  color: #E6E0DB;
  overflow: auto;

  .attribute { color:#E7BE69 }                      /* html attribute */
  .comment  { color:#BC9358; font-style: italic; } /* comment */
  .ch { color:#509E4F }                      /* escaped character */
  .class { color:#FFF }                         /* class */
  .constant, .predefined-constant { color:#FFF }                         /* constant */
  .float { color:#A4C260 }                      /* float */
  .function { color:#FFC56D }                      /* function */
  .global { color:#D0CFFE }                      /* global variable */
  .integer  { color:#A4C260 }                      /* integer */
  .inline { background:#151515 }                 /* inline code */
  .instance-variable { color:#D0CFFE }                      /* instance variable */
  .preprocessor { color:#E7BE69 }                      /* doctype */
  .keyword  { color:#CB7832 }                      /* keyword */
  .regexp { color:#A4C260 }                      /* regex */
  .string  { color:#A4C260 }                      /* string */
  .symbol { color:#6C9CBD }                      /* symbol */
  .tag { color:#E7BE69 }                      /* html tag */
  .pc { color:#6C9CBD }                      /* boolean */
}

.CodeRay {
  margin: 0.8em 0;

  pre {
    background-color: #232323;
    color: #E6E0DB;
    overflow: auto;

    .attribute { color:#E7BE69 }                      /* html attribute */
    .comment  { color:#BC9358; font-style: italic; } /* comment */
    .ch { color:#509E4F }                      /* escaped character */
    .class { color:#FFF }                         /* class */
    .constant, .predefined-constant { color:#FFF }                         /* constant */
    .float { color:#A4C260 }                      /* float */
    .function { color:#FFC56D }                      /* function */
    .global { color:#D0CFFE }                      /* global variable */
    .integer  { color:#A4C260 }                      /* integer */
    .inline { background:#151515 }                 /* inline code */
    .instance-variable { color:#D0CFFE }                      /* instance variable */
    .preprocessor { color:#E7BE69 }                      /* doctype */
    .keyword  { color:#CB7832 }                      /* keyword */
    .regexp { color:#A4C260 }                      /* regex */
    .string  { color:#A4C260 }                      /* string */
    .symbol { color:#6C9CBD }                      /* symbol */
    .tag { color:#E7BE69 }                      /* html tag */
    .pc { color:#6C9CBD }                      /* boolean */
  }
}

Add some margin to code blocks.
Add some margin to code blocks.