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CSS GLOBALS

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Giorgio Polvara

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.btn { background: hsla(0, 0%, 100%, 0); color: #fff; outline: 20px solid #fff; transition: all 125ms; } .btn:hover { background: #fff; color: #6b2afe; transform: scale(1.5); outline: 0; }

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THE GLOBAL PROBLEM

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[email protected] email

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[email protected] email .label { font-style: italic; color #333; }

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APPROVED

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APPROVED .label { margin: 1em; padding: 0.3em 0.6em; font-family: 'Black Ops One'; font-size: 2rem; text-transform: uppercase; color: #777; border: 5px solid #777; transform: rotate(12deg); }

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.label { margin: 1em; padding: 0.3em 0.6em; font-family: 'Black Ops One'; font-size: 2rem; text-transform: uppercase; color: #777; border: 5px solid #777; transform: rotate(12deg); } .label { font-style: italic; color #333; }

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.label

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.label .table

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.label .table .row

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.label .table .row Over 300…

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Every .class Is Global

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style="color:red"

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style="color:red;background:blue;b order:1px solid red;font- family:sans-serif;font-size:2em;"

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style="color:red;background:blue;b order:1px solid red;font- family:sans-serif;font-size:2em;" style="color:red;background:blue;b order:1px solid red;font- family:sans-serif;font-size:2em;"

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style="color:red;background:blue;b order:1px solid red;font- family:sans-serif;font-size:2em;" style="color:red;background:blue;b order:1px solid red;font- family:sans-serif;font-size:2em;"

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style="color:red;background:blue;b order:1px solid red;font- family:sans-serif;font-size:3em;" style="color:red;background:blue;b order:1px solid red;font- family:sans-serif;font-size:3em;"

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.btn:hover { … }

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.btn:hover { … } @media (max-width: 700px;) { … }

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.btn:hover { … } @media (max-width: 700px;) { … } @keyframes animation { … }

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label .

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label .menu__

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label .menu__ --on

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label .menu__ --on .hero__label--hover

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label .menu__ --on .hero__label--hover .form__label

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✅ Semantic names

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❌ Hard to name ✅ Semantic names

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❌ Hard to name ✅ Semantic names ✅ Less collisions

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❌ Still collisions ❌ Hard to name ✅ Semantic names ✅ Less collisions

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CAN WE DO BETTER?

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CAN WE DO BETTER?

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Web Components

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Component

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Component An atomic piece of UI/UX that you can reuse

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Click me!

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React

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const Hello = () =>

Hello world!

;

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const Hello = () =>

Hello world!

;

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const Hello = () =>

Hello world!

;

Hello world!

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const Label = (props) => (

{props.children}

)

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const Label = (props) => (

{props.children}

) APPROVED

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Approved const Label = (props) => (

{props.children}

)

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Approved const Label = (props) => (

{props.children}

)

Approved

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const Label = (props) => (

{props.children}

)

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.label { color: #777; font-size: 2rem; ... } const Label = (props) => (

{props.children}

)

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.label { color: #777; font-size: 2rem; ... } // Label.css const Label = (props) => (

{props.children}

)

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.label { color: #777; font-size: 2rem; ... } // Label.css const Label = (props) => (

{props.children}

) import cx from './Label.css'

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.label { color: #777; font-size: 2rem; ... } // Label.css const Label = (props) => (

{props.children}

) import cx from './Label.css'

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.label { color: #777; font-size: 2rem; ... }

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.label { color: #777; font-size: 2rem; ... }

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.label { color: #777; font-size: 2rem; ... } .xyz123 { color: #777; font-size: 2rem; ... }

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.label { color: #777; font-size: 2rem; ... } .xyz123 { color: #777; font-size: 2rem; ... }

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.label { color: #777; font-size: 2rem; ... } .xyz123 { color: #777; font-size: 2rem; ... }

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.label { color: #777; font-size: 2rem; ... }

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.label { color: #777; font-size: 2rem; ... } .label { color:rgb(1,2,3); } .label { position: sticky; }

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.label { color: #777; font-size: 2rem; ... } .xyz123 { color: #777; font-size: 2rem; ... } .abc987 { color:rgb(1,2,3); } .bada55 { position: sticky; } .label { color:rgb(1,2,3); } .label { position: sticky; }