Add Styled Components

package.json

@@ -9,6 +9,8 @@
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "react-scripts": "4.0.3",
+    "styled-components": "^5.2.3",
+    "styled-media-query": "^2.1.2",
     "web-vitals": "^1.0.1"
   },
   "scripts": {

src/App.js

@@ -0,0 +1,12 @@
+import { ThemeProvider } from 'styled-components'
+import GlobalStyles from './styles/global'
+import theme from './styles/theme'
+
+const App = () => (
+  <ThemeProvider theme={theme}>
+    <GlobalStyles />
+    <h1>ScreenResolution</h1>
+  </ThemeProvider>
+)
+
+export default App

src/index.js

@@ -1,11 +1,11 @@
 import React from 'react'
 import ReactDOM from 'react-dom'
-import ScreenResolution from './components/ScreenResolution'
+import App from './App'
 import reportWebVitals from './reportWebVitals'
 
 ReactDOM.render(
   <React.StrictMode>
-    <ScreenResolution />
+    <App />
   </React.StrictMode>,
   document.getElementById('root')
 )

src/styles/global.js

@@ -0,0 +1,20 @@
+import { createGlobalStyle, css } from 'styled-components'
+
+const GlobalStyles = createGlobalStyle`
+  * {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+  }
+  ${({ theme }) => css`
+    html {
+      font-size: 62.5%;
+    }
+    body {
+      font-family: ${theme.font.family};
+      font-size: ${theme.font.sizes.medium};
+    }
+  `}
+`
+
+export default GlobalStyles

src/styles/theme.js

@@ -0,0 +1,30 @@
+const theme = {
+  font: {
+    family:
+      "-apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif",
+    sizes: {
+      xsmall: '1.2rem',
+      small: '1.4rem',
+      medium: '1.6rem',
+      large: '1.8rem',
+      xlarge: '2.0rem',
+      xxlarge: '6.0rem'
+    }
+  },
+  colors: {
+    primary: '#343A40',
+    secondary: 'ADB5BD',
+    white: 'F8F9FA'
+  },
+  spacings: {
+    xxsmall: '0.8rem',
+    xsmall: '1.6rem',
+    small: '2.4rem',
+    medium: '3.2rem',
+    large: '4.0rem',
+    xlarge: '4.8rem',
+    xxlarge: '5.6rem'
+  }
+}
+
+export default theme

yarn.lock

@@ -80,7 +80,7 @@
     jsesc "^2.5.1"
     source-map "^0.5.0"
 
-"@babel/helper-annotate-as-pure@^7.10.4", "@babel/helper-annotate-as-pure@^7.12.13":
+"@babel/helper-annotate-as-pure@^7.0.0", "@babel/helper-annotate-as-pure@^7.10.4", "@babel/helper-annotate-as-pure@^7.12.13":
   version "7.12.13"
   resolved "https://registry.yarnpkg.com/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.12.13.tgz#0f58e86dfc4bb3b1fcd7db806570e177d439b6ab"
   integrity sha512-7YXfX5wQ5aYM/BOlbSccHDbuXXFPxeoUmfWtz8le2yTkTZc+BxsiEnENFoi2SlmA8ewDkG2LgIMIVzzn2h8kfw==
@@ -1136,7 +1136,7 @@
     "@babel/parser" "^7.12.13"
     "@babel/types" "^7.12.13"
 
-"@babel/traverse@^7.1.0", "@babel/traverse@^7.12.1", "@babel/traverse@^7.13.0", "@babel/traverse@^7.13.13", "@babel/traverse@^7.13.15", "@babel/traverse@^7.7.0":
+"@babel/traverse@^7.1.0", "@babel/traverse@^7.12.1", "@babel/traverse@^7.13.0", "@babel/traverse@^7.13.13", "@babel/traverse@^7.13.15", "@babel/traverse@^7.4.5", "@babel/traverse@^7.7.0":
   version "7.13.15"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.13.15.tgz#c38bf7679334ddd4028e8e1f7b3aa5019f0dada7"
   integrity sha512-/mpZMNvj6bce59Qzl09fHEs8Bt8NnpEDQYleHUPZQ3wXUMvXi+HJPLars68oAbmp839fGoOkv2pSL2z9ajCIaQ==
@@ -1182,6 +1182,28 @@
   resolved "https://registry.yarnpkg.com/@csstools/normalize.css/-/normalize.css-10.1.0.tgz#f0950bba18819512d42f7197e56c518aa491cf18"
   integrity sha512-ij4wRiunFfaJxjB0BdrYHIH8FxBJpOwNPhhAcunlmPdXudL1WQV1qoP9un6JsEBAgQH+7UXyyjh0g7jTxXK6tg==
 
+"@emotion/is-prop-valid@^0.8.8":
+  version "0.8.8"
+  resolved "https://registry.yarnpkg.com/@emotion/is-prop-valid/-/is-prop-valid-0.8.8.tgz#db28b1c4368a259b60a97311d6a952d4fd01ac1a"
+  integrity sha512-u5WtneEAr5IDG2Wv65yhunPSMLIpuKsbuOktRojfrEiEvRyC85LgPMZI63cr7NUqT8ZIGdSVg8ZKGxIug4lXcA==
+  dependencies:
+    "@emotion/memoize" "0.7.4"
+
+"@emotion/[email protected]":
+  version "0.7.4"
+  resolved "https://registry.yarnpkg.com/@emotion/memoize/-/memoize-0.7.4.tgz#19bf0f5af19149111c40d98bb0cf82119f5d9eeb"
+  integrity sha512-Ja/Vfqe3HpuzRsG1oBtWTHk2PGZ7GR+2Vz5iYGelAw8dx32K0y7PjVuxK6z1nMpZOqAFsRUPCkK1YjJ56qJlgw==
+
+"@emotion/stylis@^0.8.4":
+  version "0.8.5"
+  resolved "https://registry.yarnpkg.com/@emotion/stylis/-/stylis-0.8.5.tgz#deacb389bd6ee77d1e7fcaccce9e16c5c7e78e04"
+  integrity sha512-h6KtPihKFn3T9fuIrwvXXUOwlx3rfUvfZIcP5a6rh8Y7zjE3O06hT5Ss4S/YI1AYhuZ1kjaE/5EaOOI2NqSylQ==
+
+"@emotion/unitless@^0.7.4":
+  version "0.7.5"
+  resolved "https://registry.yarnpkg.com/@emotion/unitless/-/unitless-0.7.5.tgz#77211291c1900a700b8a78cfafda3160d76949ed"
+  integrity sha512-OWORNpfjMsSSUBVrRBVGECkhWcULOAJz9ZW8uK9qgxD+87M7jHRcvh/A96XXNhXTLmKcoYSQtBEX7lHMO7YRwg==
+
 "@eslint/eslintrc@^0.4.0":
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-0.4.0.tgz#99cc0a0584d72f1df38b900fb062ba995f395547"
@@ -2633,6 +2655,21 @@ babel-plugin-polyfill-regenerator@^0.2.0:
   dependencies:
     "@babel/helper-define-polyfill-provider" "^0.2.0"
 
+"babel-plugin-styled-components@>= 1.12.0":
+  version "1.12.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-styled-components/-/babel-plugin-styled-components-1.12.0.tgz#1dec1676512177de6b827211e9eda5a30db4f9b9"
+  integrity sha512-FEiD7l5ZABdJPpLssKXjBUJMYqzbcNzBowfXDCdJhOpbhWiewapUaY+LZGT8R4Jg2TwOjGjG4RKeyrO5p9sBkA==
+  dependencies:
+    "@babel/helper-annotate-as-pure" "^7.0.0"
+    "@babel/helper-module-imports" "^7.0.0"
+    babel-plugin-syntax-jsx "^6.18.0"
+    lodash "^4.17.11"
+
+babel-plugin-syntax-jsx@^6.18.0:
+  version "6.18.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-syntax-jsx/-/babel-plugin-syntax-jsx-6.18.0.tgz#0af32a9a6e13ca7a3fd5069e62d7b0f58d0d8946"
+  integrity sha1-CvMqmm4Tyno/1QaeYtew9Y0NiUY=
+
 babel-plugin-syntax-object-rest-spread@^6.8.0:
   version "6.13.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz#fd6536f2bce13836ffa3a5458c4903a597bb3bf5"
@@ -3109,6 +3146,11 @@ camelcase@^6.0.0, camelcase@^6.1.0, camelcase@^6.2.0:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-6.2.0.tgz#924af881c9d525ac9d87f40d964e5cea982a1809"
   integrity sha512-c7wVvbw3f37nuobQNtgsgG9POC9qMbNuMQmTCqZv23b6MIz0fcYpBiOlv9gEN/hdLdnZTDQhg6e9Dq5M1vKvfg==
 
+camelize@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/camelize/-/camelize-1.0.0.tgz#164a5483e630fa4321e5af07020e531831b2609b"
+  integrity sha1-FkpUg+Yw+kMh5a8HAg5TGDGyYJs=
+
 caniuse-api@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/caniuse-api/-/caniuse-api-3.0.0.tgz#5e4d90e2274961d46291997df599e3ed008ee4c0"
@@ -3645,6 +3687,11 @@ css-blank-pseudo@^0.1.4:
   dependencies:
     postcss "^7.0.5"
 
+css-color-keywords@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/css-color-keywords/-/css-color-keywords-1.0.0.tgz#fea2616dc676b2962686b3af8dbdbe180b244e05"
+  integrity sha1-/qJhbcZ2spYmhrOvjb2+GAskTgU=
+
 [email protected], css-color-names@^0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/css-color-names/-/css-color-names-0.0.4.tgz#808adc2e79cf84738069b646cb20ec27beb629e0"
@@ -3706,6 +3753,15 @@ css-select@^2.0.0, css-select@^2.0.2:
     domutils "^1.7.0"
     nth-check "^1.0.2"
 
+css-to-react-native@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/css-to-react-native/-/css-to-react-native-3.0.0.tgz#62dbe678072a824a689bcfee011fc96e02a7d756"
+  integrity sha512-Ro1yETZA813eoyUp2GDBhG2j+YggidUmzO1/v9eYBKR2EHVEniE2MI/NqpTQ954BMpTPZFsGNPm46qFB9dpaPQ==
+  dependencies:
+    camelize "^1.0.0"
+    css-color-keywords "^1.0.0"
+    postcss-value-parser "^4.0.2"
+
 [email protected]:
   version "1.0.0-alpha.37"
   resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0-alpha.37.tgz#98bebd62c4c1d9f960ec340cf9f7522e30709a22"
@@ -5475,6 +5531,13 @@ hmac-drbg@^1.0.1:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.1"
 
+hoist-non-react-statics@^3.0.0:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/hoist-non-react-statics/-/hoist-non-react-statics-3.3.2.tgz#ece0acaf71d62c2969c2ec59feff42a4b1a85b45"
+  integrity sha512-/gGivxi8JPKWNm/W0jSmzcMPpfpPLc3dY/6GxhX2hQ9iGj3aDfklV4ET7NjKpSinLpJ5vafa9iiGIEZg10SfBw==
+  dependencies:
+    react-is "^16.7.0"
+
 hoopy@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/hoopy/-/hoopy-0.1.4.tgz#609207d661100033a9a9402ad3dea677381c1b1d"
@@ -9069,7 +9132,7 @@ react-error-overlay@^6.0.9:
   resolved "https://registry.yarnpkg.com/react-error-overlay/-/react-error-overlay-6.0.9.tgz#3c743010c9359608c375ecd6bc76f35d93995b0a"
   integrity sha512-nQTTcUu+ATDbrSD1BZHr5kgSD4oF8OFjxun8uAaL8RwPBacGBNPf/yAuVVdx17N8XNzRDMrZ9XcKZHCjPW+9ew==
 
-react-is@^16.8.1:
+react-is@^16.7.0, react-is@^16.8.1:
   version "16.13.1"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
   integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
@@ -9840,6 +9903,11 @@ sha.js@^2.4.0, sha.js@^2.4.8:
     inherits "^2.0.1"
     safe-buffer "^5.0.1"
 
+shallowequal@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/shallowequal/-/shallowequal-1.1.0.tgz#188d521de95b9087404fd4dcb68b13df0ae4e7f8"
+  integrity sha512-y0m1JoUZSlPAjXVtPPW70aZWfIL/dSP7AFkRnniLCrK/8MDKog3TySTBmckD+RObVxH0v4Tox67+F14PdED2oQ==
+
 shebang-command@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
@@ -10343,6 +10411,27 @@ [email protected]:
     loader-utils "^2.0.0"
     schema-utils "^2.7.0"
 
+styled-components@^5.2.3:
+  version "5.2.3"
+  resolved "https://registry.yarnpkg.com/styled-components/-/styled-components-5.2.3.tgz#752669fd694aac10de814d96efc287dde0d11385"
+  integrity sha512-BlR+KrLW3NL1yhvEB+9Nu9Dt51CuOnHoxd+Hj+rYPdtyR8X11uIW9rvhpy3Dk4dXXBsiW1u5U78f00Lf/afGoA==
+  dependencies:
+    "@babel/helper-module-imports" "^7.0.0"
+    "@babel/traverse" "^7.4.5"
+    "@emotion/is-prop-valid" "^0.8.8"
+    "@emotion/stylis" "^0.8.4"
+    "@emotion/unitless" "^0.7.4"
+    babel-plugin-styled-components ">= 1.12.0"
+    css-to-react-native "^3.0.0"
+    hoist-non-react-statics "^3.0.0"
+    shallowequal "^1.1.0"
+    supports-color "^5.5.0"
+
+styled-media-query@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/styled-media-query/-/styled-media-query-2.1.2.tgz#d59e8d91bc4bcff210dc511bdcecedf16eb2c5b7"
+  integrity sha512-ds24iBxOrfIhdHP+e23y6kj1gbosgWu+tgAuxvMrYmnp6Sju/LjuY8lfkiVnn6P7mcdhtwpC2Z43o+apT9UdJg==
+
 stylehacks@^4.0.0:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/stylehacks/-/stylehacks-4.0.3.tgz#6718fcaf4d1e07d8a1318690881e8d96726a71d5"
@@ -10352,7 +10441,7 @@ stylehacks@^4.0.0:
     postcss "^7.0.0"
     postcss-selector-parser "^3.0.0"
 
-supports-color@^5.3.0:
+supports-color@^5.3.0, supports-color@^5.5.0:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
   integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==