Overleaf/services/web/public/stylesheets/app/editor/toolbar.less

.toolbar {
	display: flex;
	align-items: center;
	height: 40px;
	border-bottom: @toolbar-border-bottom;

	> a, .toolbar-right > a {
		position: relative;
		.label {
			position: absolute;
			top: 0;
			right: 0;
			padding: .15em .6em .2em;
			font-size: 60%;
			pointer-events: none; // Labels were capturing button/anchor clicks.
		}
	}

	> a:focus {
		outline: none;
	}

	> a:not(.btn),
	.toolbar-left > a:not(.btn),
	.toolbar-right > a:not(.btn) {
		display: inline-block;
		color: @toolbar-icon-btn-color;
		padding: 0 5px;
		border-radius: @border-radius-small;
		&.toolbar-header-back-projects {
			padding: 5px 10px 4px;
			margin-bottom: 1px;
		}
		&:hover {
			text-shadow: @toolbar-icon-btn-hover-shadow;
			color: @toolbar-icon-btn-hover-color;
			text-decoration: none;
		}
		&.active, &:active {
			.label {
				display: none;
			}
			color: white;
			background-color: @link-color;
			box-shadow: @toolbar-icon-btn-hover-boxshadow;
			&:hover {
				color: white;
			}
		}
	}

	.btn-full-height {
		border: none;
		border-radius: 0;
		border-right: 1px solid @toolbar-border-color;
		color: @toolbar-btn-color;
		padding: 3px 10px 5px;
		font-size: 20px;
		&:hover {
			text-shadow: @toolbar-btn-hover-text-shadow;
			background-color: @toolbar-btn-hover-bg-color;
			color: @toolbar-btn-hover-color;
		}
		&.active, &:active {
			color: @toolbar-btn-active-color;
			background-color: @toolbar-btn-active-bg-color;
			box-shadow: @toolbar-btn-active-shadow;
		}
		.label {
			top: 4px;
			right: 4px;
		}
	}
	.btn-full-height-no-border {
		border-right: 0;
		border-left: 0;
	}

	.toolbar-left {
		display: flex;
		float: left;
		text-align: center;
		align-items: center;
	}

	.toolbar-right {
		display: flex;
		align-items: center;
		flex-grow: 1;
		justify-content: flex-end;
		.btn-full-height {
			border-right: 0;
			border-left: 1px solid @toolbar-border-color;
		}
	}

	.toolbar-center {
		width: 300px;
		position: absolute;
		top: 0;
		left: 50%;
		margin-left: -150px;
		text-align: center;
		text-overflow: ellipsis;
		overflow: hidden;
	}

	&.toolbar-header {
		background-color: @toolbar-header-bg-color;
		box-shadow: @toolbar-header-shadow;
		position: absolute;
		top: 0;
		left: 0;
		right: 0;
		z-index: 1;
	}

	&.toolbar-small {
		.toolbar-small-mixin;
	}

	&.toolbar-tall {
		.toolbar-small-mixin;
	}

	&.toolbar-alt {
		.toolbar-alt-mixin;
	}
}

.toolbar-small-mixin() {
	height: 32px;
}

.toolbar-tall-mixin() {
	height: 58px;
	padding-top: 10px;
}
.toolbar-alt-mixin() {
	background-color: @toolbar-alt-bg-color;
}

.toolbar-label {
	display: none;
	margin: 0 4px;
	font-size: 12px;
	font-weight: 600;
	margin-bottom: 2px;
	vertical-align: middle;

	@media (min-width: @screen-sm-min) {
		display: inline-block;
	}
}

.editor-dark {
	.toolbar-alt {
		background-color: darken(@editor-dark-background-color, 0%);
	}
	.toolbar {
		border-color: @editor-dark-toolbar-border-color;
		.btn-full-height {
			border-color: @editor-dark-toolbar-border-color;
			&:hover {
				background-color: black;
				color: lighten(@link-color, 10%);
			}
		}
		&.toolbar-header {
			box-shadow: none;
		}
		> a:not(.btn) {
			color: @gray;
			&:hover {
				color: @gray-light;
			}
		}
	}
}