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LET’S LEARN CSSGRID

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Hi there! I’m Tim Smith

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YouTube Channel youtube.com/smithtimmytim

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Thank You

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Agenda

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Agenda 1. Problems we’ve had with layout

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Agenda 1. Problems we’ve had with layout 2. What is CSS Grid and how does it solve these problems?

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Agenda 1. Problems we’ve had with layout 2. What is CSS Grid and how does it solve these problems? 3. Why do I need to learn this?

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Agenda 1. Problems we’ve had with layout 2. What is CSS Grid and how does it solve these problems? 3. Why do I need to learn this? 4. Resources

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A History of Layout Issues

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Floats

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Floats Suck

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CSS Frameworks

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CSS Frameworks

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Separation of Concerns

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Floats Aren’t Bad

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They’re Not for Complex Layouts

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Why?

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Flexbox

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Flexbox is Flexible

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Main Column and Sidebar Layout Aside Main Content

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Main Column and Sidebar Layout Aside Main Content And our CSS.

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Main Column and Sidebar Layout Aside Main Content And our CSS. body { display: flex; } aside { background-color: #333; flex: 1 1 30%; } main { background-color: #333; flex: 1 1 70%; }

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The two columns are completely flexible.

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Flexbox Card Layout
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Flexbox Card Layout
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And now our CSS.

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Flexbox Card Layout
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And now our CSS. .boxes { display: flex; flex-wrap: wrap; } .boxes li { flex: 1 1 30%; background: #333; margin: 0 .5rem 1rem; }

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This is not what I want!

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Math

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You Need Stuff Like This li:nth-child(2n+2) { margin-right: 0; }

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You Need Stuff Like This li:nth-child(2n+2) { margin-right: 0; } Oh wait! What about bigger screens?

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You Need Stuff Like This li:nth-child(2n+2) { margin-right: 0; } Oh wait! What about bigger screens? @media screen and (min-width: 40em) { li:nth-child(2n+2) { margin-right: 1.5rem; } li:nth-child(3n+3) { margin-right: 0; } }

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Flexbox Is Awesome

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Vertical Align!

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We’re Using Flexbox Wrong

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CSS Grid to the Rescue

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CSS Grid is Not a Float Killer

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CSS Grid is Not a Flexbox Killer

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You Don’t Need a Framework

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CSS Grid Is the Framework

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CSS Grid is Friendly

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Great Use of Flexbox

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Great Use of Floats

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CSS Grid What Is It Good For?

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“My super simple theory at the moment — if you are putting widths on flex items, you are doing it wrong. Use Grid. (Let’s see if that holds.) —Jen Simmons

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CSS Grid Basics

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display: grid;

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grid-template-columns

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fr

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grid-gap

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Let’s See It in Action

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Holy Grail Layout

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Set Up Header Aside Main Content Footer

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Set Up Header Aside Main Content Footer body { display: grid; grid-template-columns: 2fr 3fr; grid-gap: 2rem; }

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Let’s Place Our Items header { grid-column: 1 / span 2; } aside { grid-column-end: span 1; grid-row: 2; } main { grid-column: 2 / span 1; grid-row: 2; } footer { grid-column: 1 / span 2; grid-row: 3; }

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Grid Lines

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Rewrite with Grid Areas body { display: grid; grid-template-columns: 2fr 3fr; grid-gap: 2rem; grid-template-areas: "header header" "aside main" "footer footer"; } header { grid-area: header; } aside { grid-area: aside; } main { grid-area: main; } footer { grid-area: footer; }

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What If? body { grid-template-areas: ". header" "aside main" ". footer"; }

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Easily Responsive body { display: grid; grid-gap: 2rem; grid-template-areas: "header" "main" "aside" "footer"; } @media and screen (min-width: 40em) { body { grid-template-columns: 2fr 3fr; grid-template-areas: "header header" "aside main" "footer footer"; } }

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Card Layout

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Setup
  • Box 1
  • Box 2
  • Box 3
  • Box 4
  • Box 5
  • Box 6

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Setup
  • Box 1
  • Box 2
  • Box 3
  • Box 4
  • Box 5
  • Box 6
Now let’s get these puppies on a Grid.

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Setup
  • Box 1
  • Box 2
  • Box 3
  • Box 4
  • Box 5
  • Box 6
Now let’s get these puppies on a Grid. .boxes { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); grid-gap: 1rem; }

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Whoa! Hold Up.

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Let’s Dissect This .boxes { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); grid-gap: 1rem; }

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Mind. Blown.

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Special Portfolio-Inspired Layout

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Setup
  • Item One
  • Item Two
  • Item Three
  • Item Four
  • Item Five

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Setup
  • Item One
  • Item Two
  • Item Three
  • Item Four
  • Item Five
And setup our Grid container.

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Setup
  • Item One
  • Item Two
  • Item Three
  • Item Four
  • Item Five
And setup our Grid container. .portfolio { display: grid; grid-auto-rows: minmax(100px, auto); grid-gap: 2px; grid-template-columns: repeat(6, 1fr); }

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grid-auto-rows

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Let’s Place Our Items .portfolio li:nth-child(1) { grid-column: 1 / -1; } .portfolio li:nth-child(2) { grid-column: 1 / span 2; grid-row-end: span 3; } .portfolio li:nth-child(3) { grid-column: 3 / span 4; grid-row-end: span 2; } .portfolio li:nth-child(4), .portfolio li:nth-child(5) { grid-column: span 2; }

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Holy Jack City, Batman

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The Power of CSS Grid

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The Time is Now

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Simpler Code

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New Amazing Layouts

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I Delayed Learning Flexbox and Regret It

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Feature Queries

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Like This @supports (display:grid) { /* Grid CSS in here */ } @supports not (display:grid) { /* Fallback CSS here */ }

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Browsers Ignore CSS They Don’t Understand

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What Did We Learn?

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1 CSS Grid Is Awesome

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2 CSS Grid Is Friendly

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3 Use CSS Grid Today

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Only the Beginning

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Rachel Andrew gridbyexample.com

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Jen Simmons labs.jensimmons.com

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Mozilla Developer Network developer.mozilla.org

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Read The Spec w3.org/TR/css-grid-1/

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Thanks! ttimsmith.com · @smithtimmytim