Shaarli Markdown Toolbar Plugin Dark CSS (Unminified) (Ref: https://github.com/immanuelfodor/shaarli-markdown-toolbar)

bootstrap-markdown.css

.md-editor {
    display: block;
    border: 1px solid #888;
}
.md-editor .md-footer,
.md-editor > .md-header {
    display: block;
    padding: 6px 4px;
    background: #333;
}
.md-editor > .md-header {
    margin: 0;
}
.md-editor > .md-preview {
    background: #444;
    border-top: 1px dashed #888;
    border-bottom: 1px dashed #ddd;
    min-height: 10px;
    overflow: auto;
}
.md-editor > textarea {
    font-family: Menlo,Monaco,Consolas,"Courier New",monospace;
    font-size: 14px;
    outline: 0;
    margin: 0;
    display: block;
    padding: 0;
    width: 100%;
    border: 0;
    border-top: 1px dashed #888;
    border-bottom: 1px dashed #888;
    border-radius: 0;
    box-shadow: none;
    background: #444;
}
.md-editor > textarea:focus {
    box-shadow: none;
    background: #444;
}
.md-editor.active {
    border-color: #888;
    outline: 0;
    -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075),0 0 8px rgba(102,175,233,.6);
    box-shadow: inset 0 1px 1px rgba(0,0,0,.075),0 0 8px rgba(102,175,233,.6);
}
.md-editor .md-controls {
    float: right;
    padding: 3px;
}
.md-editor .md-controls .md-control {
    right: 5px;
    color: #bbb;
    padding: 3px 3px 3px 10px;
}
.md-editor .md-controls .md-control:hover {
    color: #bbb;
}
.md-editor.md-fullscreen-mode {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 99999;
    padding: 60px 30px 15px;
    background: #333 !important;
    border: 0!important;
}
.md-editor.md-fullscreen-mode .md-footer {
    display: none;
}
.md-editor.md-fullscreen-mode .md-input,
.md-editor.md-fullscreen-mode .md-preview {
    margin: 0 auto!important !important;
    height: 100%!important;
    font-size: 20px!important;
    padding: 20px!important !important;
    color: #999;
    line-height: 1.6em!important;
    resize: none!important;
    box-shadow: none!important;
    background: #333!important;
    border: 0!important;
}
.md-editor.md-fullscreen-mode .md-preview {
    color: #bbb;
    overflow: auto;
}
.md-editor.md-fullscreen-mode .md-input:focus,
.md-editor.md-fullscreen-mode .md-input:hover {
    color: #bbb;
    background: #444 !important;
}
.md-editor.md-fullscreen-mode .md-header {
    background: 0 0;
    text-align: center;
    position: fixed;
    width: 100%;
    top: 20px;
}
.md-editor.md-fullscreen-mode .btn-group {
    float: none;
}
.md-editor.md-fullscreen-mode .btn {
    border: 0;
    background: 0 0;
    color: #bbb;
}
.md-editor.md-fullscreen-mode .btn.active,
.md-editor.md-fullscreen-mode .btn:active,
.md-editor.md-fullscreen-mode .btn:focus,
.md-editor.md-fullscreen-mode .btn:hover {
    box-shadow: none;
    color: #bbb;
}
.md-editor.md-fullscreen-mode .md-fullscreen-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    text-align: right;
    z-index: 1002;
    display: block;
}
.md-editor.md-fullscreen-mode .md-fullscreen-controls a {
    color: #b3b3b3;
    clear: right;
    margin: 10px;
    width: 30px;
    height: 30px;
    text-align: center;
}
.md-editor.md-fullscreen-mode .md-fullscreen-controls a:hover {
    color: #333;
    text-decoration: none;
}
.md-editor.md-fullscreen-mode .md-editor {
    height: 100%!important;
    position: relative;
}
.md-editor .md-fullscreen-controls {
    display: none;
}
.md-nooverflow {
    overflow: hidden;
    position: fixed;
    width: 100%;
}
.pure-g .md-editor {
    width: 90%;
    margin: 10px auto;
}
.pure-g .md-header.btn-toolbar {
    text-align: left;
}
.pure-g .md-editor textarea {
    margin-left: 1px !important;
    width: 99.7% !important;
}
.pure-g .md-editor.md-fullscreen-mode {
    width: 100%;
}
.pure-g .md-editor.md-fullscreen-mode .md-header.btn-toolbar {
    text-align: center;
    margin-top: 30px !important;
}
.pure-g .md-editor.md-fullscreen-mode .md-fullscreen-controls {
    top: 45px;
    right: 60px;
}
.pure-g .md-editor.md-fullscreen-mode textarea {
    margin-top: 30px !important;
    width: 100% !important;
}
@media only screen and (max-width: 480px) {
    .md-editor.md-fullscreen-mode {
        padding: 60px 15px 15px !important;
    }
    .md-editor.md-fullscreen-mode .md-input,
    .md-editor.md-fullscreen-mode .md-preview {
        padding: 20px 0 !important;
        font-size: 15px !important;
    }
}
@media only screen and (min-width: 481px) and (max-width: 680px) {
    .md-editor.md-fullscreen-mode {
        padding: 60px 22px 15px !important;
    }
    .md-editor.md-fullscreen-mode .md-input,
    .md-editor.md-fullscreen-mode .md-preview {
        padding: 20px 5px !important;
        font-size: 17px !important;
    }
}
@media only screen and (max-width: 680px) {
    .md-editor.md-fullscreen-mode .md-header {
        margin-left: -30px !important;
    }
    .md-editor.md-fullscreen-mode .md-control-fullscreen {
        display: none;
    }
}