silverstripe-framework/admin/scss/_preview.scss

/* -------------------------- */
.cms-content-controls{

	/* Styling the background, controls sit on */
	&.cms-preview-controls {
		z-index: 1;
		background: $tab-panel-texture-color;
	}

	/* Styling for icons in controls */
	.icon-view, .preview-selector.dropdown a.chzn-single {
		white-space: nowrap;
		&:before {
			display:inline-block;
			float:left;
			width: 20px;
			overflow: hidden;
			color: $color-text-dark;
		}
	}

	.cms-navigator{
		width: 100%;
		padding: $grid-y*1.5 $grid-y*1.5;
		height: 52px; /* should be set in js Layout to match page actions */
	}

	/* Preview selectors. Overrides default chosen styles and applies its own */
	.preview-selector {
		float:right;
		border-bottom:none;
		position:relative;
		box-shadow: none;
		margin: 2px 0 0 4px;
		padding: 0;
		height: 28px;

		a.chzn-single {
			width: 28px;
			padding: 6px;
			height: 28px;
			margin: -2px 0 0;
			filter: none;	/* remove ie background */
			background: none;
			border: none;
			box-shadow: none;
			border-radius: 3px;

			&::before {
				font-size: 18px;
				margin-top: -1px;
				margin-left: -1px;
			}

			&:hover, &.chzn-single-with-drop  {
				background-color: darken($color-widget-bg,6%);
				box-shadow: 0 0 3px rgba(0, 0, 0, 0.05) inset, 0 1px 0 $box-shadow-shine;
			}
			&.chzn-single-with-drop {
				border-radius: 0 0 3px 3px;
			}
			div {
				display: none;
			}
		}

		&.open .chzn-drop{
			position:absolute;
			left: auto !important; //over-ride chosen inline styles
			right: 0;
		}

		.chzn-drop{
			border-radius: 3px 3px 0 3px;
			box-shadow: 0 0 3px rgba(0, 0, 0, 0.1);
			.chzn-results {
				width: 135px;
				.result-selected {
					background: $color-widget-bg;
				}
			}
		}
		.chzn-container {
			width: auto !important; //over-ride chosen inline styles for preview selector

			&.chzn-with-rise {
				.chzn-drop {
					padding: 0;
					border-bottom: 1px solid #aaa;
					margin-top: -5px;
					width: auto !important; //over-ride chosen inline width (doesn't take image into account)

					.chzn-search {
						display: none;
					}

					ul {
						padding: 0;
						margin: 0;
						overflow: visible;

						li{
							font-size: 12px;
							line-height: 16px;
							padding: 7px 16px 7px 6px;
							color: $color-text-blue-link;
							border-bottom: 1px solid #DDD;
							background-color: #FFF;

							&:before{
								margin-right: 2px;
								font-size: 16px;
							}
							&.description {
								padding-top: 5px;
								padding-bottom: 5px;
								&:before{
									margin-top: 5px;
								}
							}
							&.highlighted, &:hover, &:focus {
								color: $color-text-blue-link;
								filter: none;
								background: lighten($color-widget-bg,2%);
								text-decoration: none;
							}
							&.first {
								border-radius: 3px 3px 0 0;
							}
							&.last {
								border-bottom: none;
								border-radius: 0 0 0 3px;
							}
							&.restricted { /* disable option (eg.split mode for smaller screen sizes) */
								color: #CCC;
								background-color: #EEE;
								pointer-events: none;
								/*text-decoration: line-through;*/
								&:before {
									opacity: 0.2;
								}
							}

							/* Description styling */
							span {
								display:block;
								color: lighten($color-text-dark, 30%);
								font-size:0.85em;
								line-height:1.1em;
								padding-left:23px;
							}
							.icon-view {
								margin-right: 4px;
							}

						}

						.disabled-tooltip {
							position: absolute;
							top: 0;
							left: 0;
							right: 0;
							height: 32px;
							background: rgba(255,255,255,0); // Prevent clicking on browsers that do not support pointer-events: none;

							&::before {
								content: 'Screen size too small';
								text-align: center;
								background: #555;
								color: white;
								padding: 4px 0;
								position: absolute;
								top: -24px;
								left: -1px;
								right: -1px;
								border-radius: 3px 3px 0 0;
								display: none;
								z-index: 2;
							}

							&::after {
								content: '';
								position: absolute;
								width: 10px;
								height: 10px;
								transform: rotate(45deg);
								display: none;
								background: #555;
								left: 47%;
								top: -6px;
							}

							&:hover::after,
							&:hover::before {
								display: block;
							}
						}
					}
				}
			}
		}
		.chzn-drop ul.chzn-results li.result-selected {
			background: darken($color-widget-bg, 2%);
			color: $color-text;
			&.highlighted, &:hover, &:focus {
				background: darken($color-widget-bg, 2%);
				color: $color-text;
			}
		}

		&.split-disabled {
			.chzn-container.chzn-with-rise .chzn-drop ul li.font-icon-columns {
				color: $color-text-disabled;
				pointer-events: none;

				&.highlighted, &:hover, &:focus {
					color: $color-text-disabled;
					background: #fff;
					cursor: default;
				}

				&::before {
					color: $color-text-disabled;
				}
			}
		}
	}

	.cms-preview-states{
		float: right;
		select{
			max-width:150px;
		}

		&.dropdown{
			max-width:150px;
			a.chzn-single{
				span{
					margin:0;
				}
			}
			.chzn-container{
				max-width:150px;
			}
		}
	}
}

/* Styling for the preview screen sizes */
.cms-preview {
	background-color: $tab-panel-texture-color;
	height: 100%;
	width: 100%;

	.cms-preview-overlay {
		width: 100%;
		height: 100%;
	}

	.preview-note {
		color: #CDD7DC;
		display: block;
		font-size: 22px;
		font-weight: bold;
		height: 82px;
		margin-top: -50px;
		margin-left: -150px;	/* half of width */
		position: absolute;
		text-align: center;
		text-shadow: 0 1px 0 #fff;
		top: 50%;
		left: 50%;
		width: 300px;

		span {
			@extend .icon-sprites-64x64;
			@include sprite($sprites-64x64-preview);

			height: 41px;
			margin: 0 auto 20px;
			width: 50px;
		}
	}
	.preview-scroll {
		height: 100%;
		overflow: auto;
		position: relative;
		width: 100%;
		.preview-device-outer {
			height: 100%;
			width: 100%;
			overflow: hidden;
			.preview-device-inner {
				box-sizing: border-box;
				width: 100%;
				height:100%;
				background-color: #FFF;
				iframe {
					height: 100%;
					overflow-y: auto;
					width: 100%;
				}
			}
		}
	}
	&.mobile, &.mobileLandscape, &.tablet, &.tabletLandscape, &.desktop {
		.preview-scroll {
			background-color: $tab-panel-texture-color; /* cover website preview icon */
			.preview-device-outer {
				border-radius: 7px;
				background: lighten(#D2DBE0, 1%);
				border: 1px solid transparent;
				border-left:1px solid darken(#D2DBE0, 1%);
				padding: 16px;
				box-sizing: content-box;
				.preview-device-inner {
					border-top:2px solid lighten(#D2DBE0,5%);
					border-right: 1px solid transparent;
					border-bottom:1px solid lighten(#D2DBE0,5%);
					border-left:1px solid darken(#D2DBE0, 5%);
				}
			}
		}
	}

	&.mobile {
		.preview-scroll .preview-device-outer {
			transform: rotate(0deg);
			transition: all .3s ease-in 1s;
			margin: 20px auto 20px;
			overflow:hidden;
			padding-top: 16px;
			.preview-device-inner {
				transform: rotate(0deg);
				transition: all .3s ease-out 1s;
			}
			&.rotate {
				transform: rotate(-90deg);
				transition: all .3s ease-in 1s;
				height: 583px;
				margin: 0px auto 0px;
				width: 320px;
				.preview-device-inner {
					transform-origin: 160px 160px;
					transform: rotate(90deg);
					transition: all .3s ease-out 1s;
					height: 320px;
					width: 583px;
				}
			}
		}
	}
	&.mobileLandscape .preview-scroll .preview-device-outer {
		transition: all .3s ease-out 1s;
		margin: 12% auto;
		padding-top: 16px;
		.preview-device-inner {
			transition: all .3s ease-out 1s;
		}
	}
	&.tablet .preview-scroll .preview-device-outer {
		transition: all .3s ease-out 1s;
		margin: 0 auto;
		.preview-device-inner {
			transition: all .3s ease-out 1s;
		}
	}
	&.tabletLandscape .preview-scroll .preview-device-outer {
		transition: all .3s ease-out 1s;
		margin: 0 auto;
		.preview-device-inner {
			transition: all .3s ease-out 1s;
		}
	}
	&.desktop .preview-scroll .preview-device-outer {
		transition: all .3s ease-out 1s;
		margin: 0 auto;
	}
}