feat: use Clay, the pure Haskell CSS preprocessor

Signed-off-by: Tsung-Ju Lii <usefulalgorithm@gmail.com>

Author: usefulalgorithm

css/Default.hs

@@ -0,0 +1,155 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module Default (defaultCss) where
+import Prelude hiding (rem)
+
+import Clay
+import Clay.Media (maxWidth, minWidth)
+
+defaultCss :: Css
+defaultCss = do
+    html ? do
+        fontSize (pct 62.5)
+        fontFamily ["Source Sans Pro", "Noto Sans TC"] [sansSerif]
+
+    body ? do
+        fontSize (rem 1.6)
+        color black
+        backgroundColor "#F5F5F5"
+
+    code ? do
+        padding (px 0) (px 0.2) (px 0) (px 0)
+        fontFamily ["Roboto Mono"] [monospace]
+
+    header ? borderBottom (rem 0.2) solid black
+
+    nav ? textAlign (alignSide sideRight)
+
+    nav |> a ? do
+        fontSize (rem 1.8)
+        fontWeight bold
+        color black
+        textDecoration none
+        textTransform uppercase
+
+    ".contacts" |> a ? do
+        display inlineBlock
+        marginTop (rem 2.4)
+        padding (px 0.2) (px 0.2) (px 0.2) (px 0.2)
+        fontSize (rem 2.4)
+        color "#555"
+        textDecoration none
+
+    footer ? do
+        borderTop (px 0.2) solid black
+        padding (rem 1.2) (px 0) (px 0) (px 0)
+        fontSize (rem 1.2)
+        color "#555"
+
+    img ? do
+        display block
+        marginLeft auto
+        marginRight auto
+
+    h1 ? fontSize (rem 2.4)
+
+    h2 ? do
+        borderTop (px 1) solid "#E6E6E6"
+        paddingTop (px 20)
+        fontSize (rem 2)
+
+    h3 ? do
+        textAlign (alignSide sideLeft)
+
+    "article .header" ? do
+        fontSize (rem 1.4)
+        fontStyle italic
+        color "#555"
+
+    ".logo" |> a ? do
+        fontWeight bold
+        color black
+        textDecoration none
+
+    query Clay.all [Clay.Media.maxWidth (px 359)] $ do
+        body ? do
+            width $ pct 90
+            margin auto auto auto auto
+            paddingTop $ px 0
+            paddingRight $ pct 5
+            paddingBottom $ px 0
+            paddingLeft $ px 0
+        header ? margin (rem 4.2) (px 0) (px 0) (px 0)
+        nav ? do
+            margin (px 0) auto (rem 3) (px 0)
+            textAlign center
+        footer ? textAlign center
+        ".logo" ? do
+            textAlign center
+            margin (rem 1) auto (rem 3) (px 0)
+        ".logo" |> a ? fontSize (rem 2.4)
+        nav |> a ? do
+            display block
+            lineHeight (rem 1.6)
+        img ? do
+            border (px 20) solid none
+            width (px 200)
+
+    query Clay.all [Clay.Media.minWidth (px 360)] $ do
+        body ? do
+            width $ pct 90
+            margin auto auto auto auto
+            paddingTop $ px 0
+            paddingRight $ pct 5
+            paddingBottom $ px 0
+            paddingLeft $ px 0
+        header ? margin (rem 4.2) (px 0) (px 0) (px 0)
+        nav ? do
+            margin (px 0) auto (rem 3) (px 0)
+            textAlign center
+        footer ? textAlign center
+        ".logo" ? do
+            textAlign center
+            margin (rem 1) auto (rem 3) (px 0)
+        ".logo" |> a ? fontSize (rem 2.4)
+        nav |> a ? do
+            display inline
+            margin (px 0) (rem 0.6) (px 0) (px 0)
+        img ? do
+            border (px 40) solid none
+            width (px 320)
+
+    query Clay.all [Clay.Media.minWidth (px 640)] $ do
+        body ? do
+            width (pct 60)
+            margin auto auto auto auto
+            padding (px 0) (px 0) (px 0) (px 0)
+        header ? do
+            margin (px 0) (px 0) (rem 3) (px 0)
+            padding (rem 1.2) (px 0) (rem 1.2) (px 0)
+        nav ? do
+            margin (px 0) (px 0) (px 0) (px 0)
+            textAlign (alignSide sideRight)
+        nav |> a ? do
+            margin (px 0) (px 0) (px 0) (rem 1.2)
+            display inline
+        footer ? textAlign (alignSide sideRight)
+        img ? do
+            border (px 40) solid none
+            width (px 320)
+        "figcaption" ? do
+            textAlign center
+            marginTop (px 18)
+        ".logo" ? do
+            margin (px 0) (px 0) (px 0) (px 0)
+            textAlign (alignSide sideLeft)
+        ".logo" |> a ? do
+            float floatLeft
+            fontSize (rem 1.8)
+        ".comments" ? do
+            paddingTop (px 5)
+            borderTop (px 2) solid black
+            marginTop (px 60)
+
+main :: IO ()
+main = putCss defaultCss