Cesiumjs 1.5 clean

A clean demo of Cesiumjs 1.5

HTML

<script src="http://cesiumjs.org/Cesium/Build/CesiumUnminified/Cesium.js"></script>
<div id=cesiumContainer></div>

CSS

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

#cesiumContainer, .cesium-viewer,
.cesium-viewer-cesiumWidgetContainer, .cesium-widget,
.cesium-widget canvas {
    width: 100%;
    height: 100%;
}

.cesium-widget {
    position: relative;
}

.cesium-widget,.cesium-widget canvas {
    width: 100%;
    height: 100%;
    touch-action: none;
}

.cesium-widget-credits {
    display: block;
    position: absolute;
    bottom: 0;
    left: 0;
    color: #fff;
    font-size: 10px;
    text-shadow: 0px 0px 2px #000000;
    padding-right: 5px;
}

.cesium-widget-credits a,
.cesium-widget-credits a:visited {
    color: #fff;
}

.cesium-widget-errorPanel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    text-align: center;
    background: rgba(0, 0, 0, 0.7);
    z-index: 99999;
}

.cesium-widget-errorPanel:before {
    display: inline-block;
    vertical-align: middle;
    height: 100%;
    content: "";
}

.cesium-widget-errorPanel-content {
    width: 75%;
    display: inline-block;
    text-align: left;
    vertical-align: middle;
    border: 1px solid #526F82;
    border-radius: 7px;
    background-color: black;
    color: white;
    font-size: 10pt;
    padding: 1em;
}

.cesium-widget-errorPanel-header {
    font-size: 120%;
    color: #fe4;
}

.cesium-widget-errorPanel-scroll {
    overflow: auto;
    font-family: monospace;
    white-space: pre-wrap;
    padding: 0;
    margin: 10px 0;
}

.cesium-widget-errorPanel-buttonPanel {
    text-align: center;
}

.cesium-viewer {
    font-family: sans-serif;
    font-size: 16px;
    overflow: hidden;
    display: block;
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.cesium-viewer-cesiumWidgetContainer {
    width: 100%;
    height: 100%;
}

.cesium-viewer-bottom {
    display: block;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding-right: 5px;
}

.cesium-viewer .cesium-widget-credits {
    display: inline;
   ...

JavaScript

var widget = new Cesium.Viewer('cesiumContainer', {

});
var scene = widget.scene;
var camera = scene.camera;
var instance = new Cesium.GeometryInstance({
    geometry : Cesium.PolygonGeometry.fromPositions({
        positions : Cesium.Cartesian3.fromDegreesArray([
            -25.586875632956662,46.743350477465576,
            -25.586875632956663,60.46252943745849,
            -11.867696672963744,60.46252943745848,
            -11.867696672963745,46.743350477465577
        ]),
        vertexFormat : Cesium.VertexFormat.POSITION_AND_COLOR
    }),
    attributes: {
        color: Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.RED)
    }
});
var instance3 = new Cesium.GeometryInstance({
    geometry : Cesium.PolygonGeometry.fromPositions({
        positions : Cesium.Cartesian3.fromDegreesArray([
            -62.0, 40.0,
            -70.0, 35.0,
            -45.0, 30.0,
            -70.0, 30.0
        ]),
        vertexFormat : Cesium.VertexFormat.POSITION_AND_COLOR
    }),
    attributes: {
        color: Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.BLUE)
    }
});
var instance2 = new Cesium.GeometryInstance({
    geometry : Cesium.PolygonGeometry.fromPositions({
        positions : Cesium.Cartesian3.fromDegreesArray([
            -25.586875632956662,46.743350477465576,
            -25.586875632956663,60.46252943745849,
            -11.867696672963744,60.46252943745848,
            -11.867696672963745,46.743350477465577
        ]),
        vertexFormat : Cesium.VertexFormat.POSITION_AND_COLOR
    }),
    attributes: {
        color: Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.GREEN)
    }
});
var instance4 = new Cesium.GeometryInstance({
    geometry : Cesium.PolygonGeometry.fromPositions({
        positions : Cesium.Cartesian3.fromDegreesArray([
            -62.0, 40.0,
            -70.0, 35.0,
            -45.0, 30.0,
            -70.0, 30.0
        ]),
        vertexFormat : Cesium.VertexFormat.POSITION_AND_COLOR
  ...