Babylon.js/Playground/css/index.css

@import url("https://fonts.googleapis.com/css?family=Montserrat:300,400");
@import url("https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css");
html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: sans-serif;
}
.wrapper {
    height: calc(100% - 40px - 30px); /* nvabar top and bottom*/
    width: 100%;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-direction: row;
    flex-direction: row;
}
.wrapper .gutter {
    background-color: #f7f7f7;
    background-repeat: no-repeat;
    background-position: 50%;
}
.wrapper .gutter.light {
    background-color: #f7f7f7;
}
.wrapper .gutter.dark {
    background-color: #333;
}

.wrapper .gutter:hover {
    cursor: ew-resize;
}
.wrapper .gutter.gutter-vertical {
    background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAFAQMAAABo7865AAAABlBMVEVHcEzMzMzyAv2sAAAAAXRSTlMAQObYZgAAABBJREFUeF5jOAMEEAIEEFwAn3kMwcB6I2AAAAAASUVORK5CYII=");
}
.wrapper .gutter.gutter-horizontal {
    background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAeCAYAAADkftS9AAAAIklEQVQoU2M4c+bMfxAGAgYYmwGrIIiDjrELjpo5aiZeMwF+yNnOs5KSvgAAAABJRU5ErkJggg==");
}
.wrapper #jsEditor {
    padding-top:5px;
    height: 100%;
}

.wrapper #jsEditor.light {
    background-color: white;
}
.wrapper #jsEditor.dark {
    background-color: #1e1e1e;
}
.wrapper #canvasZone {
    height: 100%;
}
#renderCanvas {
    width: 100%;
    height: 100%;
    touch-action: none;
}
#fpsLabel {
    position: absolute;
    right: 10px;
    top: 50px;
    cursor: default;
    z-index:10;
    background-color: #7283a0;
    color:white;
    padding:5px;
    border-radius: 3px;
    font-family: 'Montserrat'
}
.navbar {
    height: 40px;
    width: 100%;
    font-family: "Montserrat";
    font-weight: 400;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    position: relative;
    z-index:5;
    line-height: 40px;
}
.navbar.dark {
    background-color: #333;
    box-shadow: 0 3px 10px #000;
}
.navbar.light {
    background-color: #efefef;
    box-shadow: 0 3px 10px #999;
}
.navbar .title {
    height: 40px;
    padding-left: 10px;
    color: #15A4FA;
    display: inline-block;
}
.navbar .version {
    height: 40px;
    display: inline-block;
    color: #7283a0;
    margin-right: 20px;
}
.navbar .category {
    height: 40px;
    margin: 0 15px 0 15px;
    display: inline-block;
}
.navbar .category.right {
    position: absolute;
    right: 0;
    top: 0;
}
.button {
    display: inline-block;
    height: 25px;
    line-height: 25px;
    color: white;
    background-color: #7283a0;
    margin: 0 2px 0 2px;
    padding: 0 10px 0 10px;
    font-size: 0.85em;
    border-radius: 3px;
}

.button i {
    margin-left: 10px;
}
.button:hover {
    cursor: pointer;
    background-color: #15A4FA;
}
.navbar .button.run {
    height: 30px;
    line-height: 30px;
    background-color: #15A4FA;
    font-size: 1.0em;
}
.navbar .select {
    position: relative;
}
.navbar .select:after {
    font-family: 'FontAwesome', sans-serif;
    content: "\00a0 \00a0 \00a0 \f078";
}
.navbar .select .toDisplay {
    border: 1px solid #7283a0;
    position: absolute;
    z-index: 10;
    left: 0;
    top: 25px;
    min-width: 100%;
    display: none;
}
.navbar .select .toDisplay .option {
    font-size: 0.9em;
    height: 35px;
    line-height: 35px;
    padding: 0px 5px 0px 5px;
    text-align: center;
    border-bottom : 1px solid rgba(0,0,0,0.1);
}

.navbar .select .toDisplay .option.light:hover {
    cursor: pointer;
    background-color: #d9d9d9;
}


.navbar .select .toDisplay .option.dark {
    background-color: #333;
    color: white;
}
.navbar .select .toDisplay .option.light {
    background-color: white;
    color: #7283a0;
}
.navbar .select .toDisplay .option.dark:hover {
    cursor: pointer;
    background-color: #555;
}

.navbar .select .toDisplayBig {
    border: 1px solid #7283a0;
    border-radius: 5px;
    position: absolute;
    z-index: 10;
    top: 32px;
    width:550px;
    max-height:350px;
    right:0;
    position:absolute;
    font-size:0.8em;
    display: none;
    
}

.navbar .select .toDisplayBig.light {
    background-color: white;    
    color: #15A4FA;
}

.navbar .select .toDisplayBig.dark {
    background-color: #333;    
    color:white;
}

.navbar .select .toDisplayBig ul {
    column-count: 3;        
    padding:0;
    margin:0;
    list-style: none;
}

.navbar .select .toDisplayBig ul li {
    padding:0 5px 0 5px;
}

.navbar .select .toDisplayBig ul li:hover {
    cursor: pointer;
}
.navbar .select .toDisplayBig ul li.light:hover {
    background-color: #d9d9d9;
}
.navbar .select .toDisplayBig ul li.dark:hover {
    background-color: #555;
}


.navbar .select .toDisplayBig a {
    text-decoration: none;
}

.navbar .select .toDisplayBig a.dark {
    color: white;
}

.navbar .select .toDisplayBig a.light {
    color: #7283a0;
}



.navbar .check:after {
    font-family: 'FontAwesome', sans-serif;
    content: "\00a0 \00a0 \00a0 \f14a";
}
.navbar .check.uncheck {
    background-color: #8290aa;
}
.navbar .check.uncheck:after {
    font-family: 'FontAwesome', sans-serif;
    content: "\00a0 \00a0 \00a0 \f096";
}
#errorZone {
    display:none;
    position: absolute;
    width: 50%;
    left: 25%;
    bottom: 40px;
    background-color: #C73228;
    padding:20px;
    border-radius: 5px;
    color:white;
    font-family: 'Inconsolata';
}
#errorZone button {
    position:absolute;
    top : 3px;
    right: 10px;
    padding: 0;
    cursor: pointer;
    background: transparent;
    border: 0;
    -webkit-appearance: none;
    color: #000;
    text-shadow: 0 1px 0 #fff;
    opacity: .4;
    font-size: 1.8em;
}

/* Navbar bottom */

.navbarBottom {
    height:30px;
    width:100%;
    line-height:30px;
    position:relative;
    font-family: 'Montserrat';
}
.navbarBottom.dark {
    background-color: #333;
}
.navbarBottom.light {
    background-color: #efefef;
}

.navbarBottom #statusBar {
    line-height:30px;
    color: #E74C3C;
    font-family: 'Inconsolata';
    padding-left:20px;
}


.navbarBottom .links {
    position:absolute;
    right : 0;
    top:-1px;
    height:30px;
    padding-right:20px;
}
.navbarBottom .links .link{
    height:30px;
    display:inline-block;
    color:#999;
    padding: 0 10px 0 10px;
    margin : 0 5px 0 5px;
    font-size:0.8em;
}
.navbarBottom .links .link.light:hover{
    color:#999;
    background-color:#333;
}
.navbarBottom .links .link.dark:hover{
    color:#333;
    background-color:#eee;
}
.navbarBottom .links .link a{
    text-decoration: none;
    color:#999;
    display: inline-block;
}

/* MONACO */

.monaco-editor .container:before,
.monaco-editor .row:before {
    content: "";
    display: inherit;
}
.monaco-editor .container:after,
.monaco-editor .row:after {
    clear: inherit;
}
.monaco-editor .container {
    width: auto;
    margin: inherit;
    padding: inherit;
}
.monaco-editor .close {
    float: none;
    font-size: inherit;
    font-weight: inherit;
    line-height: inherit;
    color: inherit;
    text-shadow: inherit;
    opacity: inherit;
    filter: inherit;
}
.monaco-editor .row {
    margin: inherit;
}
.monaco-editor .invisible {
    visibility: visible;
}
.monaco-editor .view-lines {
    font-family: 'Inconsolata' !important;
}
/* Save form & co */

.save-message {
    display: none;
    position:absolute;
    top:40px; /* navbar top */
    width: 100%;
    z-index:5;
    text-align: center;
    font-size: 0.8em;
    line-height: 2em;
    cursor:pointer;
}

.save-message.light {
    background-color: rgba(239, 239, 239, 0.9);
    color: #7283a0;
}

.save-message.dark {
    background-color: rgba(51, 51, 51, 0.9);
    color: #eee;
}

.save-layer {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(120, 120, 120, .5);
    text-align: center;
}
.save-layer .save-form {
    position: absolute;
    top: 150px;
    left: calc(50% - 205px);
    width: 410px;
    height: 370px;
    padding-top: 15px;
    -webkit-border-radius: 6px;
    -moz-border-radius: 6px;
    border-radius: 6px;
    background-color: rgba(27, 27, 27, 0.75);
    border-color: #252525;
    color: white;
    font-family: "Montserrat";
    font-size: 14px;
}
.save-layer .save-form .separator {
    width: 350px;
    border-bottom: 1px solid #999;
    margin: auto;
    margin-bottom: 10px;
}
.save-layer .save-form input,
.save-layer .save-form textarea {
    display:block;
    width: 350px;
    margin:auto;
    margin-bottom: 20px;
    font-family: "Montserrat";
    padding:5px;
}

/*Media queries*/

@media (max-width: 1600px) {
    .desktopOnly {
        display: none !important;
    }
}
@media (max-width: 1375px) {
    .desktopOnly {
        display: none !important;
    }
    .desktopTabletOnly {
        display: none !important;
    }
}
@media (max-width: 975px) {
    .title {
        display : none !important;
    }
    .version {
        display : none !important;
    }
}