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frontend/node_modules/antd/es/table/style/sticky.js

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+import { unit } from '@ant-design/cssinjs';
+const genStickyStyle = token => {
+  const {
+    componentCls,
+    opacityLoading,
+    tableScrollThumbBg,
+    tableScrollThumbBgHover,
+    tableScrollThumbSize,
+    tableScrollBg,
+    zIndexTableSticky,
+    stickyScrollBarBorderRadius,
+    lineWidth,
+    lineType,
+    tableBorderColor
+  } = token;
+  const tableBorder = `${unit(lineWidth)} ${lineType} ${tableBorderColor}`;
+  return {
+    [`${componentCls}-wrapper`]: {
+      [`${componentCls}-sticky`]: {
+        '&-holder': {
+          position: 'sticky',
+          zIndex: zIndexTableSticky,
+          background: token.colorBgContainer
+        },
+        '&-scroll': {
+          position: 'sticky',
+          bottom: 0,
+          height: `${unit(tableScrollThumbSize)} !important`,
+          zIndex: zIndexTableSticky,
+          display: 'flex',
+          alignItems: 'center',
+          background: tableScrollBg,
+          borderTop: tableBorder,
+          opacity: opacityLoading,
+          '&:hover': {
+            transformOrigin: 'center bottom'
+          },
+          // fake scrollbar style of sticky
+          '&-bar': {
+            height: tableScrollThumbSize,
+            backgroundColor: tableScrollThumbBg,
+            borderRadius: stickyScrollBarBorderRadius,
+            transition: `all ${token.motionDurationSlow}, transform 0s`,
+            position: 'absolute',
+            bottom: 0,
+            '&:hover, &-active': {
+              backgroundColor: tableScrollThumbBgHover
+            }
+          }
+        }
+      }
+    }
+  };
+};
+export default genStickyStyle;