custom.css

/* Monokai */
div.CodeMirror-lines {
/*     background-color: #222222;
    color: white; */
    border: 0px;
    /* padding-top: 1em; */
    padding-bottom: 1em;
}

/* Based on Sublime Text's Monokai theme */
.cm-s-ipython {background: #272822; color: #f8f8f2;}
.cm-s-ipython div.CodeMirror-selected {background: #49483E !important;}
.cm-s-ipython .CodeMirror-gutter {background: #272822; border-right: 0px;}
.cm-s-ipython .CodeMirror-gutter-text {color: #d0d0d0;}
.cm-s-ipython .CodeMirror-cursor {border-left: 1px solid #f8f8f0 !important;}
.cm-s-ipython span.cm-comment {color: #75715e;}
.cm-s-ipython span.cm-atom {color: #ae81ff;}
.cm-s-ipython span.cm-number {color: #ae81ff;}
.cm-s-ipython span.cm-property, .cm-s-ipython span.cm-attribute {color: #a6e22e;}
.cm-s-ipython span.cm-keyword {color: #f92672;}
.cm-s-ipython span.cm-string {color: #e6db74;}
.cm-s-ipython span.cm-variable {color: #a6e22e;}
.cm-s-ipython span.cm-variable-2 {color: #9effff;}
.cm-s-ipython span.cm-def {color: #fd971f;}
.cm-s-ipython span.cm-error {background: #f92672; color: #f8f8f0;}
.cm-s-ipython span.cm-bracket {color: #f8f8f2;}
.cm-s-ipython span.cm-tag {color: #f92672;}
.cm-s-ipython span.cm-link {color: #ae81ff;}
.cm-s-ipython .CodeMirror-matchingbracket {
  text-decoration: underline;
  color: white !important;
}