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

.ace_search {
	background-color: @gray-lightest;
	border: 1px solid @toolbar-border-color;
	border-top: 0 none;
	width: 350px;
	overflow: hidden;
	position: absolute;
	top: 0px;
	z-index: 99;
	white-space: normal;
	padding: @line-height-computed / 4;

	font-family: @font-family-sans-serif;

	a, button {
		i {
			pointer-events: none;
		}
	}

	.ace_searchbtn_close {
		position: absolute;
		top: 6px;
		right: 12px;
		color: @gray;
		&:hover {
			color: @gray-dark;
		}
	}

	.ace_search_form, .ace_replace_form {
		margin-bottom: @line-height-computed / 4;
		input {
			width: 210px;
			display: inline-block;
			vertical-align: middle;
		}
		.btn-group {
			display: inline-block;
		}
	}

	.ace_nomatch {
		input {
			border-color: @red;
		}
	}
}
.ace_search.left {
	border-left: 0 none;
	border-radius: 0px 0px @border-radius-base 0px;
	left: 0;
}
.ace_search.right {
	border-radius: 0px 0px 0px @border-radius-base;
	border-right: 0 none;
	right: 0;
}