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HTML

            
              .main-content
	.title Book1 - Excel
	.menu-bar
		each val, index in ['File','Home', 'Insert', 'Page Layout', 'Formulas','Data', 'Review', 'View', 'Help']
			div
				span= val
	.icon-bar
		.icon-bar__clipboard
			.icon-paste
				.icon
				span Paste
			.icon.icon-cut
			.icon.icon-copy
			.icon-bar__name Clipboard
		.icon-bar__font
			select.font-name
				option(selected) Noto Sans
				each val, index in ['Arial', 'Calibri', 'Comic Sans MS', 'Courier New', 'Impact', 'Georgia', 'Garamond', 'Lato','Open Sans','Palatino', 'Verdana']
					option(style="--font:"+val)= val
			select.font-size
				option(selected) 14
				each val, index in ['16', '18','20','22', '24','26','28','36','48','72']
					option= val
			each val, index in ['bold','italic','underline', 'border','fill','color']
				div(class='icon icon-'+val)
			.icon-bar__name Font
		.icon-bar__alignment
			each val, index in ['alignt','alignm','alignb', 'orientation','alignl','alignc','alignr','indentinc','indentdec']
				div(class='icon icon-'+val)
			.wrap-text
				.icon
				span Wrap Text
			.merge-center
				.icon
				span Merge & Center
			.icon-bar__name Alignment
		.icon-bar__number
			select.number-format
				each val, index in ['General','Number','Currency', 'Accounting','Short Date', 'Long Date','Time','Currency','Percentage']
					option= val
			each val, index in ['acc','percent','comma', 'decimalinc','decimaldec']
				div(class='icon icon-'+val)
			.icon-bar__name Number
		.icon-bar__styles
			.conditional
				.icon
			.format-table
				.icon
			.cell-style
				.icon
			.icon-desc Conditional Formatting
			.icon-desc Format as Table
			.icon-desc Cell Styles
			.icon-bar__name Styles
		.icon-bar__cells
			.cell-insert 
				.icon
			.cell-delete
				.icon
			.cell-format
				.icon
			.icon-desc Insert
			.icon-desc Delete
			.icon-desc Format
			.icon-bar__name Cells
	.cell-content
		div fx
		div
	.cells
		.cells__spacer
		each val, index in ['A','B','C', 'D','E','F','G','H','I','J','K']
			.cells__alphabet= val
		- for (var i=1; i<21; i++)
			.cells__number= i
		- for (var i=0; i<214; i++)
			input.cells__input
		input.input__explanation(value="Part of the CSS Grid Collection 👉🏻")
		div.input__see-more
			a(href="https://codepen.io/collection/DQvYpQ/" target="_blank") Click here!
		div.input__sm-1
			a(href="https://twitter.com/meowlivia_" target="_blank") Twitter
		div.input__sm-2
			a(href="https://github.com/oliviale" target="_blank") GitHub
		div.input__sm-3
			a(href="https://dribbble.com/oliviale" target="_blank") Dribbble
!

CSS

            
              $gray: rgb(243, 242, 241);
$green: rgb(33, 115, 70);
$gray-dark: rgb(230, 230, 230);
$gray-darker: rgb(205, 205, 205);

@mixin flex-centered {
	display: flex;
	justify-content: center;
	align-items: center;
}

* {
	box-sizing: border-box;
}

body {
	background: #fff;
	font-family: "Noto Sans", sans-serif;
	color: #444;
	font-size: 14px;
}

aside.context {
	text-align: center;
	color: #333;
	line-height: 1.7;
	a {
		text-decoration: none;
		color: #333;
		padding: 3px 0;
		border-bottom: 1px dashed;
		&:hover {
			border-bottom: 1px solid;
		}
	}
	.explanation {
		max-width: 700px;
		margin: 6em auto 0;
	}
}

footer {
	text-align: center;
	margin: 4em auto;
	width: 100%;
	a {
		text-decoration: none;
		display: inline-block;
		width: 45px;
		height: 45px;
		border-radius: 50%;
		background: transparent;
		border: 1px dashed #333;
		color: #333;
		margin: 5px;
		&:hover {
			background: rgba(255, 255, 255, 0.1);
		}
		.icons {
			margin-top: 12px;
			display: inline-block;
			font-size: 20px;
		}
	}
}

.main-content {
	display: grid;
	min-height: 100vh;
	grid-template-rows: repeat(2, 45px) 115px 60px auto;
	max-width: 100%;
	> div {
		max-width: 100%;
	}
}

.title {
	background: $green;
	text-align: center;
	display: grid;
	place-content: center;
	color: #fff;
}

.menu-bar {
	display: grid;
	grid-template-columns: repeat(10, max-content);
	padding: 15px;
	grid-gap: 30px;
	background: $gray;
	div:nth-child(2) span {
		display: inline-block;
		position: relative;
		border-bottom: 5px solid $green;
		padding-bottom: 6px;
		font-weight: 700;
	}
}

.cell-content {
	border: 1px solid $gray-dark;
	background: $gray-dark;
	display: grid;
	padding: 10px;
	grid-template-columns: 50px auto;
	div {
		border: 1px solid $gray-darker;
		background: #fff;
		display: flex;
		align-items: center;
		&:nth-child(1) {
			justify-content: center;
			color: #999;
			font: italic 700 18px "Merriweather", serif;
			border-right: none;
		}
	}
}

.cells {
	position: relative;
	display: grid;
	grid-template-columns: 40px repeat(11, calc((100% - 50px) / 11));
	grid-template-rows: repeat(21, 25px);
	grid-gap: 1px;
	background: $gray-darker;
	grid-auto-flow: dense;
	max-width: 100%;
	overflow: hidden;
	&__spacer {
		background: $gray-dark;
		position: relative;
		&:after {
			content: "";
			position: absolute;
			right: 4px;
			bottom: 4px;
			height: 80%;
			width: 100%;
			background: linear-gradient(
				135deg,
				transparent 30px,
				#bbb 30px,
				#bbb 55px,
				transparent 55px
			);
		}
	}
	&__alphabet {
		background: $gray-dark;
		@include flex-centered;
	}
	&__number {
		background: $gray-dark;
		grid-column: 1 / span 1;
		@include flex-centered;
	}
	&__input {
		border: none;
		padding: 0 6px;
	}
	input, button {
		border: none;
		background: #fff;
		padding: 0 6px;
		font-family: 'Noto Sans', sans-serif;
	}
}

.input {
	&__explanation {
		grid-column: 3 / span 2;
		grid-row: 15;
	}
	&__see-more {
		grid-column: 5;
		grid-row: 15;
		text-align: left;
		padding: 6px;
		background: #fff;
	}
	&__sm-1, &__sm-2, &__sm-3 {
		text-align: center;
		padding: 6px;
		grid-row: 15;
		background: #fff;
	}
	&__sm-1 {
		grid-column: 8;
	}
	&__sm-2 {
		grid-column: 9;
	}
	&__sm-3 {
		grid-column: 10;
	}
}

.icon-bar {
	background: $gray;
	box-shadow: 0 3px 5px rgba(0, 0, 0, 0.1);
	position: relative;
	display: grid;
	padding: 10px 15px;
	grid-template-columns: repeat(6, max-content);
	grid-template-rows: auto 35px;
	grid-auto-flow: dense;
	> div {
		display: grid;
		grid-template-rows: repeat(2, 30px) 30px;
		border-right: 1px solid $gray-darker;
		grid-gap: 5px;
	}
	&__name {
		font-size: 12px;
		text-align: center;
		align-self: end;
		margin-bottom: 3px;
	}
	.icon-desc {
		margin-top: 5px;
		line-height: 1.15;
		font-size: 13px;
	}
	.icon {
		background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/567707/spriteExcel.png);
	}
}

.icon-bar__clipboard {
	grid-template-columns: 50px 30px;
	padding-right: 10px;
	.icon-bar__name {
		grid-column: 1 / span 2;
	}
	.icon {
		&-paste {
			@include flex-centered;
			flex-direction: column;
			grid-row: 1 / span 2;
			.icon {
				background-position: -30px -60px;
				height: 45px;
				width: 100%;
			}
			span {
				margin-top: 5px;
				display: block;
			}
		}
		&-cut {
			background-position: 0 0;
		}
		&-copy {
			background-position: -30px 0;
		}
	}
}

.icon-bar__font {
	padding: 0 10px;
	grid-template-columns: repeat(3, 30px) 40px repeat(2, 30px) ;
	justify-content: space-around;
	.icon-bar__name {
		grid-column: 1 / span 5;
	}
	select {
		height: 25px;
		&:nth-child(1) {
			grid-column: 1 / span 4;
			option {
				font-family: var(--font);
			}
		}
		&:nth-child(2) {
			margin-left: -6px;
			grid-column: 5 / span 2;
		}
	}
	.icon {
		&-bold {
			background-position:  -30px -150px;
		}
		&-italic {
			background-position:  -60px -150px;
		}
		&-underline {
			background-position: -90px -150px;
			border-right: 1px solid $gray-darker;
			margin-right: -2px;
		}
		&-border {
			background-position: -60px 0;
			margin: 0 5px;
		}
		&-fill {
			background-position: -90px 0;
			border-left: 1px solid $gray-darker;
			margin-left: -2px;
		}
		&-color {
			background-position: -120px 0;
		}
	}
}

.icon-bar__alignment {
	padding: 0 10px;
	grid-template-columns: repeat(5, 30px) 160px;
	.icon-bar__name {
		grid-column: 1 / span 6;
	}
	.icon {
		&-alignt {
			background-position: -150px 0;
		}
		&-alignm {
			background-position: -180px 0;
		}
		&-alignb {
			background-position: -210px 0;
		}
		&-orientation {
			background-position: -240px 0;
			border-left: 1px solid $gray-darker;
		}
		&-alignl {
			background-position: 0 -30px;
			grid-column: 1;
		}
		&-alignc {
			background-position: -30px -30px;
		}
		&-alignr {
			background-position: -60px -30px;
		}
		&-indentinc {
			background-position: -90px -30px;
			border-left: 1px solid $gray-darker;
		}
		&-indentdec {
			background-position: -120px -30px;
		}
	}
	.wrap-text, .merge-center {
		grid-column: 6;
		border-left: 1px solid $gray-darker;
		padding-left: 5px;
		display: flex;
		align-items: center;
		.icon {
			width: 30px;
			height: 30px;
		}
		span {
			display: block;
			padding-left: 5px;
		}
	}
	.wrap-text {
		grid-row: 1;
		.icon {
			background-position: -270px 0;
		}
	}
	.merge-center {
		.icon {
			background-position: -150px -30px;
		}
	}
}

.icon-bar__number {
	grid-template-columns: repeat(5, 30px);
	padding: 0 10px;
	select {
		grid-column: span 5;
		height: 25px;
	}
	.icon {
		&-acc {
			background-position: -180px -30px;
		}
		&-percent {
			background-position: -210px -30px;
		}
		&-comma {
			background-position: -240px -30px;
		}
		&-decimalinc {
			background-position: -270px -30px;
			border-left: 1px solid $gray-darker;
		}
		&-decimaldec {
			background-position: 0 -60px;
		}
	}
	.icon-bar__name {
		grid-column: span 5;
	}
}

.icon-bar__styles {
	grid-template-columns: 80px 70px 60px;
	padding: 0 10px;
	text-align: center;
	.icon-bar__name {
		grid-column: span 3;
	}
	.icon {
		width: 45px;
		height: 45px;
		margin: -8px auto 5px;
	}
	.conditional .icon {
		background-position: -75px -60px;
	}
	.format-table .icon {
		background-position: -120px -60px;
	}
	.cell-style .icon {
		background-position: -165px -60px;
	}
}

.icon-bar__cells {
	grid-template-columns: repeat(3, 50px);
	padding: 0 10px;
	text-align: center;
	.icon-bar__name {
		grid-column: span 3;
	}
	.icon {
		width: 45px;
		height: 45px;
		margin: -8px auto 5px;
	}
	.cell-insert .icon {
		background-position: -210px -60px;
	}
	.cell-delete .icon {
		background-position: -255px -60px;
	}
	.cell-format .icon {
		background-position: -30px -105px;
	}
}
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