diff --git a/tests/test_boxes.py b/tests/test_boxes.py
index 9b8cffb1..ce7f4b29 100644
--- a/tests/test_boxes.py
+++ b/tests/test_boxes.py
@@ -9,7 +9,7 @@
 import pytest
 from weasyprint.css import PageType, get_all_computed_styles
 from weasyprint.formatting_structure import boxes, build
-from weasyprint.layout.pages import set_page_type_computed_styles
+from weasyprint.layout.page import set_page_type_computed_styles
 
 from .testing_utils import (
     FakeHTML, assert_no_logs, assert_tree, capture_logs, parse, parse_all,
diff --git a/tests/test_css.py b/tests/test_css.py
index 320ff583..a4d4eef4 100644
--- a/tests/test_css.py
+++ b/tests/test_css.py
@@ -14,7 +14,7 @@ from weasyprint import CSS, css, default_url_fetcher
 from weasyprint.css import (
     PageType, get_all_computed_styles, parse_page_selectors)
 from weasyprint.css.computed_values import strut_layout
-from weasyprint.layout.pages import set_page_type_computed_styles
+from weasyprint.layout.page import set_page_type_computed_styles
 from weasyprint.urls import path2url
 
 from .testing_utils import (
diff --git a/weasyprint/css/__init__.py b/weasyprint/css/__init__.py
index 88bf4ff0..f84e1cd4 100644
--- a/weasyprint/css/__init__.py
+++ b/weasyprint/css/__init__.py
@@ -238,7 +238,7 @@ def find_stylesheets(wrapper_element, device_media_type, url_fetcher, base_url,
     The output order is the same as the source order.
 
     """
-    from ..html import element_has_link_type  # Work around circular imports.
+    from ..html import element_has_link_type
 
     for wrapper in wrapper_element.query_all('style', 'link'):
         element = wrapper.etree_element
diff --git a/weasyprint/document.py b/weasyprint/document.py
index 282b6559..b0803774 100644
--- a/weasyprint/document.py
+++ b/weasyprint/document.py
@@ -28,7 +28,7 @@ from .formatting_structure.build import build_formatting_structure
 from .html import W3C_DATE_RE, get_html_metadata
 from .images import get_image_from_uri as original_get_image_from_uri
 from .layout import LayoutContext, layout_document
-from .layout.percentages import percentage
+from .layout.percent import percentage
 from .logger import LOGGER, PROGRESS_LOGGER
 from .text.ffi import ffi, pango
 from .text.fonts import FontConfiguration
diff --git a/weasyprint/draw.py b/weasyprint/draw.py
index 5662b60b..e1416dfe 100644
--- a/weasyprint/draw.py
+++ b/weasyprint/draw.py
@@ -15,7 +15,7 @@ from xml.etree import ElementTree
 from .formatting_structure import boxes
 from .images import SVGImage
 from .layout import replaced
-from .layout.backgrounds import BackgroundLayer
+from .layout.background import BackgroundLayer
 from .stacking import StackingContext
 from .text.ffi import ffi, harfbuzz, pango, units_from_double, units_to_double
 from .text.line_break import get_last_word_end
diff --git a/weasyprint/formatting_structure/build.py b/weasyprint/formatting_structure/build.py
index 536886f1..7b81f6ac 100644
--- a/weasyprint/formatting_structure/build.py
+++ b/weasyprint/formatting_structure/build.py
@@ -71,7 +71,7 @@ def build_formatting_structure(element_tree, style_for, get_image_from_uri,
     target_collector.check_pending_targets()
 
     box.is_for_root_element = True
-    # If this is changed, maybe update weasy.layout.pages.make_margin_boxes()
+    # If this is changed, maybe update weasy.layout.page.make_margin_boxes()
     process_whitespace(box)
     box = anonymous_table_boxes(box)
     box = flex_boxes(box)
diff --git a/weasyprint/images.py b/weasyprint/images.py
index 964af123..918b460d 100644
--- a/weasyprint/images.py
+++ b/weasyprint/images.py
@@ -14,7 +14,7 @@ from xml.etree import ElementTree
 import pydyf
 from PIL import Image
 
-from .layout.percentages import percentage
+from .layout.percent import percentage
 from .logger import LOGGER
 from .svg import SVG
 from .urls import URLFetchingError, fetch
diff --git a/weasyprint/layout/__init__.py b/weasyprint/layout/__init__.py
index 729532ff..073b51bf 100644
--- a/weasyprint/layout/__init__.py
+++ b/weasyprint/layout/__init__.py
@@ -21,8 +21,8 @@ from functools import partial
 from ..formatting_structure import boxes
 from ..logger import PROGRESS_LOGGER
 from .absolute import absolute_box_layout, absolute_layout
-from .backgrounds import layout_backgrounds
-from .pages import make_all_pages, make_margin_boxes
+from .background import layout_backgrounds
+from .page import make_all_pages, make_margin_boxes
 
 
 def initialize_page_maker(context, root_box):
diff --git a/weasyprint/layout/absolute.py b/weasyprint/layout/absolute.py
index a5062b44..251941cd 100644
--- a/weasyprint/layout/absolute.py
+++ b/weasyprint/layout/absolute.py
@@ -6,9 +6,9 @@
 
 from ..formatting_structure import boxes
 from .min_max import handle_min_max_width
-from .percentages import resolve_percentages, resolve_position_percentages
+from .percent import resolve_percentages, resolve_position_percentages
 from .preferred import shrink_to_fit
-from .tables import table_wrapper_width
+from .table import table_wrapper_width
 
 
 class AbsolutePlaceholder:
@@ -187,6 +187,8 @@ def absolute_height(box, context, containing_block):
 
 
 def absolute_block(context, box, containing_block, fixed_boxes):
+    from .block import block_container_layout
+
     cb_x, cb_y, cb_width, cb_height = containing_block
 
     translate_box_width, translate_x = absolute_width(
@@ -200,9 +202,6 @@ def absolute_block(context, box, containing_block, fixed_boxes):
     if box.is_table_wrapper:
         table_wrapper_width(context, box, (cb_width, cb_height))
 
-    # avoid a circular import
-    from .blocks import block_container_layout
-
     new_box, _, _, _, _ = block_container_layout(
         context, box, max_position_y=float('inf'), skip_stack=None,
         page_is_empty=False, absolute_boxes=absolute_boxes,
@@ -223,7 +222,6 @@ def absolute_block(context, box, containing_block, fixed_boxes):
 
 def absolute_flex(context, box, containing_block_sizes, fixed_boxes,
                   containing_block):
-    # Avoid a circular import
     from .flex import flex_layout
 
     # TODO: this function is really close to absolute_block, we should have
@@ -302,8 +300,8 @@ def absolute_box_layout(context, box, containing_block, fixed_boxes):
 
 
 def absolute_replaced(context, box, containing_block):
-    # avoid a circular import
-    from .inlines import inline_replaced_box_width_height
+    from .inline import inline_replaced_box_width_height
+
     inline_replaced_box_width_height(box, containing_block)
 
     cb_x, cb_y, cb_width, cb_height = containing_block
diff --git a/weasyprint/layout/backgrounds.py b/weasyprint/layout/background.py
similarity index 99%
rename from weasyprint/layout/backgrounds.py
rename to weasyprint/layout/background.py
index 3093e1ea..a9ccbb5d 100644
--- a/weasyprint/layout/backgrounds.py
+++ b/weasyprint/layout/background.py
@@ -9,7 +9,7 @@ from itertools import cycle
 
 from ..formatting_structure import boxes
 from . import replaced
-from .percentages import percentage, resolve_radii_percentages
+from .percent import percentage, resolve_radii_percentages
 
 Background = namedtuple('Background', 'color, layers, image_rendering')
 BackgroundLayer = namedtuple(
diff --git a/weasyprint/layout/blocks.py b/weasyprint/layout/block.py
similarity index 99%
rename from weasyprint/layout/blocks.py
rename to weasyprint/layout/block.py
index da5ff5f4..e28ea6f4 100644
--- a/weasyprint/layout/blocks.py
+++ b/weasyprint/layout/block.py
@@ -8,15 +8,15 @@
 
 from ..formatting_structure import boxes
 from .absolute import AbsolutePlaceholder, absolute_layout
-from .columns import columns_layout
+from .column import columns_layout
 from .flex import flex_layout
 from .float import avoid_collisions, float_layout, get_clearance
-from .inlines import (
+from .inline import (
     iter_line_boxes, min_max_auto_replaced, replaced_box_height,
     replaced_box_width)
 from .min_max import handle_min_max_width
-from .percentages import resolve_percentages, resolve_position_percentages
-from .tables import table_layout, table_wrapper_width
+from .percent import resolve_percentages, resolve_position_percentages
+from .table import table_layout, table_wrapper_width
 
 
 def block_level_layout(context, box, max_position_y, skip_stack,
diff --git a/weasyprint/layout/columns.py b/weasyprint/layout/column.py
similarity index 99%
rename from weasyprint/layout/columns.py
rename to weasyprint/layout/column.py
index c52d7fc8..0a5d90fc 100644
--- a/weasyprint/layout/columns.py
+++ b/weasyprint/layout/column.py
@@ -9,15 +9,14 @@
 from math import floor
 
 from .absolute import absolute_layout
-from .percentages import resolve_percentages
+from .percent import resolve_percentages
 
 
 def columns_layout(context, box, max_position_y, skip_stack, containing_block,
                    page_is_empty, absolute_boxes, fixed_boxes,
                    adjoining_margins):
     """Lay out a multi-column ``box``."""
-    # Avoid circular imports
-    from .blocks import (
+    from .block import (
         block_box_layout, block_level_layout, block_level_width,
         collapse_margin)
 
diff --git a/weasyprint/layout/flex.py b/weasyprint/layout/flex.py
index b120a60c..a06ed4d2 100644
--- a/weasyprint/layout/flex.py
+++ b/weasyprint/layout/flex.py
@@ -11,9 +11,9 @@ from math import log10
 
 from ..css.properties import Dimension
 from ..formatting_structure import boxes
-from .percentages import resolve_one_percentage, resolve_percentages
+from .percent import resolve_one_percentage, resolve_percentages
 from .preferred import max_content_width, min_content_width
-from .tables import find_in_flow_baseline
+from .table import find_in_flow_baseline
 
 
 class FlexLine(list):
@@ -22,8 +22,7 @@ class FlexLine(list):
 
 def flex_layout(context, box, max_position_y, skip_stack, containing_block,
                 page_is_empty, absolute_boxes, fixed_boxes):
-    # Avoid a circular import
-    from . import blocks, preferred
+    from . import block, preferred
 
     context.create_block_formatting_context()
     resume_at = None
@@ -101,7 +100,7 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
     if parent_box.margin_right == 'auto':
         box.margin_right = parent_box.margin_right = 0
     if isinstance(parent_box, boxes.FlexBox):
-        blocks.block_level_width(parent_box, containing_block)
+        block.block_level_width(parent_box, containing_block)
     else:
         parent_box.width = preferred.flex_max_content_width(
             context, parent_box)
@@ -154,7 +153,7 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
             new_child.style['height'] = 'auto'
             new_child.style['min_height'] = Dimension(0, 'px')
             new_child.style['max_height'] = Dimension(float('inf'), 'px')
-            new_child = blocks.block_level_layout(
+            new_child = block.block_level_layout(
                 context, new_child, float('inf'), child_skip_stack,
                 parent_box, page_is_empty, [], [], [], False)[0]
             content_size = new_child.height
@@ -213,7 +212,7 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
                     else:
                         new_child = child.copy()
                     new_child.width = float('inf')
-                    new_child = blocks.block_level_layout(
+                    new_child = block.block_level_layout(
                         context, new_child, float('inf'), child_skip_stack,
                         parent_box, page_is_empty, absolute_boxes, fixed_boxes,
                         adjoining_margins=[], discard=False)[0]
@@ -228,7 +227,7 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
                     else:
                         new_child = child.copy()
                     new_child.width = 0
-                    new_child = blocks.block_level_layout(
+                    new_child = block.block_level_layout(
                         context, new_child, float('inf'), child_skip_stack,
                         parent_box, page_is_empty, absolute_boxes, fixed_boxes,
                         adjoining_margins=[], discard=False)[0]
@@ -248,7 +247,7 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
     # Step 4
     # TODO: the whole step has to be fixed
     if axis == 'width':
-        blocks.block_level_width(box, containing_block)
+        block.block_level_width(box, containing_block)
     else:
         if box.style['height'] != 'auto':
             box.height = box.style['height'].value
@@ -460,9 +459,9 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
                 child_copy = child.copy_with_children(child.children)
             else:
                 child_copy = child.copy()
-            blocks.block_level_width(child_copy, parent_box)
+            block.block_level_width(child_copy, parent_box)
             new_child, _, _, adjoining_margins, _ = (
-                blocks.block_level_layout_switch(
+                block.block_level_layout_switch(
                     context, child_copy, float('inf'), child_skip_stack,
                     parent_box, page_is_empty, absolute_boxes, fixed_boxes,
                     adjoining_margins=[], discard=False))
@@ -473,8 +472,7 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
                 # As flex items margins never collapse (with other flex items
                 # or with the flex container), we can add the adjoining margins
                 # to the child bottom margin.
-                child.margin_bottom += blocks.collapse_margin(
-                    adjoining_margins)
+                child.margin_bottom += block.collapse_margin(adjoining_margins)
             else:
                 child.width = min_content_width(context, child, outer=False)
 
@@ -841,7 +839,7 @@ def flex_layout(context, box, max_position_y, skip_stack, containing_block,
     for line in flex_lines:
         for i, child in line:
             if child.is_flex_item:
-                new_child, child_resume_at = blocks.block_level_layout_switch(
+                new_child, child_resume_at = block.block_level_layout_switch(
                     context, child, max_position_y, child_skip_stack, box,
                     page_is_empty, absolute_boxes, fixed_boxes,
                     adjoining_margins=[], discard=False)[:2]
diff --git a/weasyprint/layout/float.py b/weasyprint/layout/float.py
index 4eed8af3..22d60b3d 100644
--- a/weasyprint/layout/float.py
+++ b/weasyprint/layout/float.py
@@ -8,9 +8,9 @@
 
 from ..formatting_structure import boxes
 from .min_max import handle_min_max_width
-from .percentages import resolve_percentages, resolve_position_percentages
+from .percent import resolve_percentages, resolve_position_percentages
 from .preferred import shrink_to_fit
-from .tables import table_wrapper_width
+from .table import table_wrapper_width
 
 
 @handle_min_max_width
@@ -23,10 +23,9 @@ def float_width(box, context, containing_block):
 
 def float_layout(context, box, containing_block, absolute_boxes, fixed_boxes):
     """Set the width and position of floating ``box``."""
-    # Avoid circular imports
-    from .blocks import block_container_layout
+    from .block import block_container_layout
     from .flex import flex_layout
-    from .inlines import inline_replaced_box_width_height
+    from .inline import inline_replaced_box_width_height
 
     cb_width, cb_height = (containing_block.width, containing_block.height)
     resolve_percentages(box, (cb_width, cb_height))
diff --git a/weasyprint/layout/inlines.py b/weasyprint/layout/inline.py
similarity index 99%
rename from weasyprint/layout/inlines.py
rename to weasyprint/layout/inline.py
index f6036022..87adfdec 100644
--- a/weasyprint/layout/inlines.py
+++ b/weasyprint/layout/inline.py
@@ -16,10 +16,10 @@ from .absolute import AbsolutePlaceholder, absolute_layout
 from .flex import flex_layout
 from .float import avoid_collisions, float_layout
 from .min_max import handle_min_max_height, handle_min_max_width
-from .percentages import resolve_one_percentage, resolve_percentages
+from .percent import resolve_one_percentage, resolve_percentages
 from .preferred import (
     inline_min_content_width, shrink_to_fit, trailing_whitespace_size)
-from .tables import find_in_flow_baseline, table_wrapper_width
+from .table import find_in_flow_baseline, table_wrapper_width
 
 
 def iter_line_boxes(context, box, position_y, skip_stack, containing_block,
@@ -440,7 +440,7 @@ def first_letter_to_box(box, skip_stack, first_letter_style):
 @handle_min_max_width
 def replaced_box_width(box, containing_block):
     """Set the used width for replaced boxes (inline- or block-level)."""
-    from .blocks import block_level_width
+    from .block import block_level_width
 
     width, height, ratio = box.replacement.get_intrinsic_size(
         box.style['image_resolution'], box.style['font_size'])
@@ -596,8 +596,7 @@ def atomic_box(context, box, position_x, skip_stack, containing_block,
 
 def inline_block_box_layout(context, box, position_x, skip_stack,
                             containing_block, absolute_boxes, fixed_boxes):
-    # Avoid a circular import
-    from .blocks import block_container_layout
+    from .block import block_container_layout
 
     resolve_percentages(box, containing_block)
 
@@ -625,9 +624,9 @@ def inline_block_box_layout(context, box, position_x, skip_stack,
 
 
 def inline_block_baseline(box):
-    """
-    Return the y position of the baseline for an inline block
-    from the top of its margin box.
+    """Return the y position of the baseline for an inline block.
+
+    Position is taken from the top of its margin box.
 
     http://www.w3.org/TR/CSS21/visudet.html#propdef-vertical-align
 
diff --git a/weasyprint/layout/pages.py b/weasyprint/layout/page.py
similarity index 99%
rename from weasyprint/layout/pages.py
rename to weasyprint/layout/page.py
index f8f4b4db..1efd8196 100644
--- a/weasyprint/layout/pages.py
+++ b/weasyprint/layout/page.py
@@ -12,9 +12,9 @@ from ..css import PageType, computed_from_cascaded
 from ..formatting_structure import boxes, build
 from ..logger import PROGRESS_LOGGER
 from .absolute import absolute_layout
-from .blocks import block_container_layout, block_level_layout
+from .block import block_container_layout, block_level_layout
 from .min_max import handle_min_max_height, handle_min_max_width
-from .percentages import resolve_percentages
+from .percent import resolve_percentages
 from .preferred import max_content_width, min_content_width
 
 
diff --git a/weasyprint/layout/percentages.py b/weasyprint/layout/percent.py
similarity index 100%
rename from weasyprint/layout/percentages.py
rename to weasyprint/layout/percent.py
diff --git a/weasyprint/layout/preferred.py b/weasyprint/layout/preferred.py
index 345f3ee5..7623b94d 100644
--- a/weasyprint/layout/preferred.py
+++ b/weasyprint/layout/preferred.py
@@ -374,8 +374,7 @@ def table_and_columns_preferred_widths(context, box, outer=True):
     http://dbaron.org/css/intrinsic/
 
     """
-    # Avoid a circular import
-    from .tables import distribute_excess_width
+    from .table import distribute_excess_width
 
     table = box.get_wrapped_table()
     result = context.tables.get(table)
@@ -732,7 +731,7 @@ def flex_max_content_width(context, box, outer=True):
 
 def trailing_whitespace_size(context, box):
     """Return the size of the trailing whitespace of ``box``."""
-    from .inlines import split_first_line, split_text_box
+    from .inline import split_first_line, split_text_box
 
     while isinstance(box, (boxes.InlineBox, boxes.LineBox)):
         if not box.children:
diff --git a/weasyprint/layout/replaced.py b/weasyprint/layout/replaced.py
index 96b9854e..95493e58 100644
--- a/weasyprint/layout/replaced.py
+++ b/weasyprint/layout/replaced.py
@@ -7,7 +7,7 @@
 
 """
 
-from .percentages import percentage
+from .percent import percentage
 
 
 def default_image_sizing(intrinsic_width, intrinsic_height, intrinsic_ratio,
diff --git a/weasyprint/layout/tables.py b/weasyprint/layout/table.py
similarity index 98%
rename from weasyprint/layout/tables.py
rename to weasyprint/layout/table.py
index fe5be9b2..dc2b2337 100644
--- a/weasyprint/layout/tables.py
+++ b/weasyprint/layout/table.py
@@ -8,15 +8,14 @@
 
 from ..formatting_structure import boxes
 from ..logger import LOGGER
-from .percentages import resolve_one_percentage, resolve_percentages
+from .percent import resolve_one_percentage, resolve_percentages
 from .preferred import max_content_width, table_and_columns_preferred_widths
 
 
 def table_layout(context, table, max_position_y, skip_stack, containing_block,
                  page_is_empty, absolute_boxes, fixed_boxes):
     """Layout for a table box."""
-    # Avoid a circular import
-    from .blocks import (
+    from .block import (
         block_container_layout, block_level_page_break,
         find_earlier_page_break)
 
@@ -526,7 +525,10 @@ def table_layout(context, table, max_position_y, skip_stack, containing_block,
 
 
 def add_top_padding(box, extra_padding):
-    """Increase the top padding of a box. This also translates the children.
+    """Increase the top padding of a box.
+
+    This also translates the children.
+
     """
     box.padding_top += extra_padding
     for child in box.children:
@@ -534,7 +536,7 @@ def add_top_padding(box, extra_padding):
 
 
 def fixed_table_layout(box):
-    """Run the fixed table layout and return a list of column widths
+    """Run the fixed table layout and return a list of column widths.
 
     http://www.w3.org/TR/CSS21/tables.html#fixed-table-layout
 
@@ -748,8 +750,7 @@ def table_wrapper_width(context, wrapper, containing_block):
 
 
 def cell_baseline(cell):
-    """
-    Return the y position of a cell’s baseline from the top of its border box.
+    """Return the y position of a cell baseline from the top of its border box.
 
     See http://www.w3.org/TR/CSS21/tables.html#height-layout
 
@@ -764,9 +765,10 @@ def cell_baseline(cell):
 
 
 def find_in_flow_baseline(box, last=False, baseline_types=(boxes.LineBox,)):
-    """
-    Return the absolute Y position for the first (or last) in-flow baseline
-    if any, or None.
+    """Return the absolute y position for the first (or last) in-flow baseline.
+
+    If there’s no in-flow baseline, return None.
+
     """
     # TODO: synthetize baseline when needed
     # See https://www.w3.org/TR/css-align-3/#synthesize-baseline