base.less

.clearfix {
	clear: both;

	&::after {
		content: "";
		display: table;
		clear: both;
	}
}

*,
*::before,
*::after {
	.box-sizing(border-box);
}

*:not(input):not(textarea),
*:not(input):not(textarea)::before,
*:not(input):not(textarea)::after {
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}

button {
	background: none;
	border-width: 0;
	padding: 0;
	text-align: left;
	cursor: pointer;
	text-transform: inherit;
	color: inherit;
	font-style: inherit;
}

.allow-text-selection {
	-webkit-user-select: text;
	-moz-user-select: text;
	-ms-user-select: text;
	user-select: text;
}

.text-right {
	text-align: right;
}

.no-scroll {
	overflow: hidden !important;
}

.page-settings,
.page-settings * {
	-webkit-user-select: text;
	-moz-user-select: text;
	-ms-user-select: text;
	user-select: text;
}

:focus {
	outline: 0 !important;
	outline-color: transparent;
	outline-style: none;
}

a {
	cursor: pointer;
	text-decoration: none;

	&:hover,
	&:active {
		text-decoration: none;
	}
}

code {
	border-radius: 4px;
	border-width: 1px;
	display: block;
	font-size: 13px;
	font-weight: 600;
	margin: 5px 0;
	padding: 0.5em;
	vertical-align: middle;
	word-wrap: break-word;
	text-align: left;
	white-space: pre-wrap;
	unicode-bidi: embed;
	direction: ltr;
	font-family: Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

	&.inline {
		display: inline;
		padding: 0 0.5em;
		margin: 0 0.1em;
		line-height: 16px;
	}
}

code.hljs {
	overflow-y: hidden;
}

pre {
	display: inline-block;
	width: 100%;
}

blockquote {
	.clearfix;
	margin: 0.5em 0;

	&:first-child {
		margin-top: 0;
	}

	&:last-child {
		margin-bottom: 0;
	}
	padding-left: 10px;
	position: relative;

	&::before {
		content: ' ';
		width: 4px;
		position: absolute;
		border-radius: 2px;
		left: 0;
		top: -1px;
		bottom: -1px;
	}
}

.login-terms {
	font-size: smaller;
	width: 520px;
	padding: 10px;
	max-width: 100%;
	margin: auto;

	a {
		font-weight: bold !important;
		text-decoration: underline;
	}
}

.upload-preview {
	padding: 1rem;

	.upload-preview-file {
		height: 200px;
		background-size: contain;
		background-repeat: no-repeat;
		background-position: center center;
	}
}

.upload-preview-title {
	padding: 3px;
	border-radius: 0 0 5px 5px;
}

.flex-center {
	display: -webkit-flex;
	display: flex;
	-webkit-align-items: center;
	align-items: center;
}

.copyonly {
	float: left;
	display: inline-block;
	vertical-align: baseline;
	width: 0;
	height: 0;
	font-size: 0;
	-moz-box-orient: vertical;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}

.first-unread,
.cozy .first-unread,
.compact .first-unread {
	&.message,
	&.sequential.message {
		padding-top: 20px;
	}

	.body {
		&::before {
			content: "";
			display: block;
			position: absolute;
			right: 0;
			left: 0;
			top: 0;
			transition: background-color, 0.5s, linear;