diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b48cbfd
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,20 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+max_line_length = 120
+tab_width = 4
+
+[{*.cjs,*.es6,*.js,*.mjs}]
+indent_size = 2
+ij_continuation_indent_size = 4
+ij_javascript_spaces_within_imports = true
+ij_javascript_spaces_within_array_initializer_brackets = true
+ij_javascript_spaces_within_object_literal_braces = true
+
+[*.html]
+indent_size = 2
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/index.html b/index.html
index 108605d..1f3a01f 100644
--- a/index.html
+++ b/index.html
@@ -14,10 +14,11 @@
   <button>View</button>
 </nav>
 <nav id="left-menu" data-state="planning">
+  <span data-resize="left-menu"></span>
   <section id="block-picker">
     <label>
       Filter:
-      <input data-input="filter">
+      <input data-input="block-filter">
     </label>
     <div class="list" id="block-list">
       <template>
@@ -29,7 +30,7 @@
 <main>
   <div data-state="initialization">
     Select configuration file:
-    <button data-button="loadConfiguration" data-configuration="default">Default (2026-07-06)</button>
+    <button data-button="load-configuration" data-configuration="default">Default (2026-07-06)</button>
     <input type="file" data-input="configuration" accept=".ncpf.json" />
   </div>
   <div data-state="planning">
@@ -44,7 +45,11 @@
     </div>
   </div>
 </main>
-<nav id="right-menu"></nav>
-<nav id="bottom-menu"></nav>
+<nav id="right-menu">
+  <span data-resize="right-menu"></span>
+</nav>
+<nav id="bottom-menu">
+  <span data-resize="bottom-menu"></span>
+</nav>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/scripts/atlas.js b/scripts/atlas.js
index 2e4b8d0..2ce5b37 100644
--- a/scripts/atlas.js
+++ b/scripts/atlas.js
@@ -103,6 +103,7 @@ export function makeAtlasImage(index) {
   const y = atlasIndexY * size[1];
 
   const div = document.createElement("div");
+  div.draggable = false;
   div.classList.add("atlas-texture");
   div.style.backgroundImage = `url(${atlasBlobURL})`;
   div.style.setProperty("--atlas-resolution", `${atlasResolution}px`);
@@ -112,4 +113,4 @@ export function makeAtlasImage(index) {
   div.style.setProperty("--size-y", `${size[1]}px`);
 
   return div;
-}
\ No newline at end of file
+}
diff --git a/scripts/dom-utils.js b/scripts/dom-utils.js
index bed4ddb..97c9756 100644
--- a/scripts/dom-utils.js
+++ b/scripts/dom-utils.js
@@ -18,4 +18,14 @@ export function addEventToInput(dataValue, event, callback, props = {}) {
 }
 export function addEventToButton(dataValue, event, callback, props = {}) {
   addEventToElement("button", dataValue, event, callback, props);
-}
\ No newline at end of file
+}
+
+export function debounce(fn, milliseconds = 200) {
+  let timeout = null;
+  return (e) => {
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+    timeout = setTimeout(() => fn(e), milliseconds);
+  }
+}
diff --git a/scripts/events.js b/scripts/events.js
index 0ad01b5..4a58046 100644
--- a/scripts/events.js
+++ b/scripts/events.js
@@ -1,5 +1,9 @@
-export function emitEvent(name) {
-  window.dispatchEvent(new Event(`ncp:${name}`));
+export function emitEvent(name, data = null) {
+  if (data !== null && data !== undefined) {
+    window.dispatchEvent(new CustomEvent(`ncp:${name}`, { detail: data }));
+  } else {
+    window.dispatchEvent(new Event(`ncp:${name}`));
+  }
 }
 
 export function listenTo(name, callback) {
@@ -14,4 +18,4 @@ export function awaitEvent(name) {
     };
     window.addEventListener(`ncp:${name}`, callback);
   });
-}
\ No newline at end of file
+}
diff --git a/scripts/filter.js b/scripts/filter.js
new file mode 100644
index 0000000..ea5acbb
--- /dev/null
+++ b/scripts/filter.js
@@ -0,0 +1,53 @@
+export class Filter {
+  match = [];
+  negate = [];
+
+  constructor(query) {
+    query ??= "";
+    query = query.trim();
+
+    // https://stackoverflow.com/a/16261693
+    for (let match of (query.match(/(?:[^\s"]+|"[^"]*")+/g) ?? [])) {
+      const negate = match[0] === '-';
+      if (negate) {
+        match = match.slice(1);
+      }
+
+      if (match[0] === '"' && match[match.length - 1] === '"') {
+        match = match.slice(1, match.length - 1);
+      }
+
+      match = match.trim().toLocaleLowerCase();
+
+      if (!match) continue;
+
+      if (negate) {
+        this.negate.push(match);
+      } else {
+        this.match.push(match);
+      }
+    }
+  }
+
+  static fromInput(dataValue) {
+    const elem = document.querySelector(`[data-input='${dataValue}']`);
+    return new Filter(elem.value);
+  }
+
+  test(...data) {
+    for (const datum of data) {
+      const normalized = datum.trim().toLocaleLowerCase().trim();
+      for (const n of this.negate) {
+        if (normalized.includes(n)) {
+          return false;
+        }
+      }
+      for (const m of this.match) {
+        if (normalized.includes(m)) {
+          return true;
+        }
+      }
+    }
+    return this.match.length === 0;
+  }
+}
diff --git a/scripts/main.js b/scripts/main.js
index a4ed261..9dcd010 100644
--- a/scripts/main.js
+++ b/scripts/main.js
@@ -1,54 +1,15 @@
 import { atlasMetadata, makeAtlasImage } from "./atlas.js";
 import { DomList } from "./dom-list.js";
-import { addEventToButton, addEventToInput, getElements } from "./dom-utils.js";
+import { addEventToButton, addEventToInput, debounce, getElements } from "./dom-utils.js";
 import { emitEvent, listenTo } from "./events.js";
 import { loadConfiguration } from "./configuration.js";
 import { getState, setState, STATE } from "./state.js";
-
-let multiblockSize = [ 7, 7, 5 ]; // width (screen x), depth (screen y), height (xy grids)
-let suppressHover = false;
-let activeItem = -1;
-
-function cellHoverEvent(e) {
-  if (suppressHover) return;
-
-  const cells = document.querySelectorAll("#planner-list [data-x]");
-  cells.forEach(c => delete c.dataset.highlight);
-  if (e.type === "mouseenter") {
-    cells.forEach(c => {
-      if (c.dataset.y === e.target.dataset.y && c.dataset.z === e.target.dataset.z) {
-        c.dataset.highlight = "x";
-      }
-      if (c.dataset.x === e.target.dataset.x && c.dataset.z === e.target.dataset.z) {
-        c.dataset.highlight = "y";
-      }
-      if (c.dataset.x === e.target.dataset.x && c.dataset.y === e.target.dataset.y) {
-        c.dataset.highlight = "z";
-      }
-      if (c === e.target) {
-        delete c.dataset.highlight;
-      }
-    });
-  }
-}
-
-function listClickEvent(e) {
-  const items = document.querySelectorAll("#block-list [data-index]");
-  items.forEach(i => delete i.dataset.active);
-  activeItem = Number(e.currentTarget.dataset.index);
-  e.currentTarget.dataset.active = undefined;
-}
+import { initializePlanner } from "./planner.js";
+import { initializeMenuResizing } from "./resize-menus.js";
 
 window.addEventListener("load", () => {
   emitEvent("setup-start");
 
-  window.addEventListener("keypress", e => {
-    console.log(e);
-    if (e.key === "H") {
-      suppressHover = !suppressHover;
-    }
-  });
-
   getElements("state", "*").forEach(e => {
     e.classList.add("hidden");
     if (e.dataset.state === getState()) {
@@ -57,7 +18,10 @@ window.addEventListener("load", () => {
   });
 
   addEventToInput("configuration", "input", loadConfiguration);
-  addEventToButton("loadConfiguration", "click", loadConfiguration)
+  addEventToButton("load-configuration", "click", loadConfiguration);
+  addEventToInput("block-filter", "input", debounce(e => {
+    emitEvent("block-picker:filter", e.target.value);
+  }));
 
   listenTo("state", () => {
     console.log("State changed", getState());
@@ -71,44 +35,8 @@ window.addEventListener("load", () => {
 
   listenTo("config:end", () => setState(STATE.planning));
 
-  listenTo("config:end", () => {
-    console.log(atlasMetadata);
-    const grid = new DomList(document.querySelector("#block-list"));
-    grid.clear();
-
-    atlasMetadata.forEach((m, i) => {
-      const item = grid.makeItem();
-      item.dataset.index = i.toString(10);
-      item.appendChild(makeAtlasImage(i));
-      item.addEventListener("click", listClickEvent);
-      grid.addItem(item);
-    });
-  });
-
-  listenTo("config:end", () => {
-    const list = new DomList(document.querySelector("#planner-list"));
-    list.clear();
-
-    for (let z = 0; z < multiblockSize[2]; z++) {
-      const item = list.makeItem();
-      item.style.setProperty("--width", multiblockSize[1]);
-      const grid = new DomList(item);
-      grid.clear();
-      for (let y = 0; y < multiblockSize[1]; y++) {
-        for (let x = 0; x < multiblockSize[0]; x++) {
-          const cell = grid.makeItem();
-          cell.dataset.x = x.toString(10);
-          cell.dataset.y = y.toString(10);
-          cell.dataset.z = z.toString(10);
-          cell.appendChild(makeAtlasImage(-1));
-          cell.addEventListener("mouseenter", cellHoverEvent);
-          cell.addEventListener("mouseleave", cellHoverEvent);
-          grid.addItem(cell);
-        }
-      }
-      list.addItem(item);
-    }
-  });
+  initializePlanner();
+  initializeMenuResizing();
 
   emitEvent("setup-end");
 
diff --git a/scripts/planner.js b/scripts/planner.js
new file mode 100644
index 0000000..6f2be54
--- /dev/null
+++ b/scripts/planner.js
@@ -0,0 +1,168 @@
+import {atlasMetadata, makeAtlasImage} from "./atlas.js";
+import {DomList} from "./dom-list.js";
+import { emitEvent, listenTo } from "./events.js";
+import { Filter } from "./filter.js";
+
+let suppressHover = false;
+let multiblockSize = [7, 7, 5]; // width (screen x), depth (screen y), height (xy grids)
+let activeItem = -1;
+
+function cellHoverEvent(e) {
+  if (suppressHover) return;
+
+  const cells = document.querySelectorAll("#planner-list [data-x]");
+  cells.forEach(c => {
+    delete c.dataset.highlight;
+    delete c.dataset.highlightDistance;
+  });
+  if (e.type === "mouseenter") {
+    cells.forEach(c => {
+      if (c.dataset.y === e.target.dataset.y && c.dataset.z === e.target.dataset.z) {
+        c.dataset.highlight = "x";
+        c.dataset.highlightDistance = Math.abs(c.dataset.x - e.target.dataset.x).toString(10);
+      }
+      if (c.dataset.x === e.target.dataset.x && c.dataset.z === e.target.dataset.z) {
+        c.dataset.highlight = "y";
+        c.dataset.highlightDistance = Math.abs(c.dataset.y - e.target.dataset.y).toString(10);
+      }
+      if (c.dataset.x === e.target.dataset.x && c.dataset.y === e.target.dataset.y) {
+        c.dataset.highlight = "z";
+        c.dataset.highlightDistance = Math.abs(c.dataset.z - e.target.dataset.z).toString(10);
+      }
+      if (c === e.target) {
+        delete c.dataset.highlight;
+      }
+    });
+  }
+}
+
+function cellClickEvent(e) {
+  if (e.type === "contextmenu") {
+    e.preventDefault();
+    return;
+  }
+
+  if (e.buttons !== 1 && e.buttons !== 2 && e.type !== "mouseup") {
+    return;
+  }
+
+  if (e.buttons === 1 && activeItem === -1) return;
+
+  if (e.type === "mousedown") {
+    window.addEventListener("mouseup", cellClickEvent);
+    emitEvent("planner:drag:start");
+  }
+  if (e.type === "mouseup") {
+    window.removeEventListener("mouseup", cellClickEvent);
+    emitEvent("planner:drag:end");
+
+    const cells = document.querySelectorAll("#planner-list [data-x]");
+    cells.forEach(c => {
+      if (c.dataset.preview) {
+        c.dataset.tile = c.dataset.preview;
+        emitEvent("planner:cell:change", c);
+        delete c.dataset.preview;
+      }
+      if (c.dataset.previewRemove) {
+        delete c.dataset.previewRemove;
+        c.replaceChildren(makeAtlasImage(-1));
+        c.dataset.tile = (-1).toString(10);
+        emitEvent("planner:cell:change", c);
+      }
+    });
+    return;
+  }
+
+  if (e.buttons === 2) {
+    // remove
+
+    if (e.target.tile === "-1") return;
+
+    e.target.dataset.previewRemove = "yes";
+    return;
+  } else if (e.buttons === 1) {
+    // add
+    if (e.target.dataset.preview === activeItem.toString(10)) return;
+
+    e.target.dataset.preview = activeItem.toString(10);
+    e.target.replaceChildren(makeAtlasImage(activeItem));
+  }
+
+  if (e.target.dataset.preview === activeItem.toString(10)) return;
+
+  e.target.dataset.preview = activeItem.toString(10);
+  e.target.replaceChildren(makeAtlasImage(activeItem));
+}
+
+function listClickEvent(e) {
+  const items = document.querySelectorAll("#block-list [data-index]");
+  items.forEach(i => delete i.dataset.active);
+  activeItem = Number(e.currentTarget.dataset.index);
+  e.currentTarget.dataset.active = undefined;
+}
+
+export function initializePlanner() {
+  listenTo("block-picker:filter", e => {
+    buildBlockPicker();
+  });
+
+  listenTo("config:end", buildBlockPicker);
+
+  listenTo("config:end", buildPlanner);
+}
+
+function buildBlockPicker() {
+  const filter = Filter.fromInput("block-filter");
+  console.log(filter);
+
+  const grid = new DomList(document.querySelector("#block-list"));
+  grid.clear();
+
+  atlasMetadata.forEach((m, i) => {
+    const item = grid.makeItem();
+    item.dataset.index = i.toString(10);
+    if (!filter.test(m.modules["plannerator:display_name"].display_name)) {
+      item.classList.add("hidden");
+    }
+    item.appendChild(makeAtlasImage(i));
+    item.addEventListener("click", listClickEvent);
+    grid.addItem(item);
+  });
+}
+
+function buildPlanner() {
+  document.addEventListener("keydown", e => {
+    console.log(e);
+    if (e.key === "H") {
+      suppressHover = !suppressHover;
+    }
+  });
+
+  const list = new DomList(document.querySelector("#planner-list"));
+  list.clear();
+
+  for (let z = 0; z < multiblockSize[2]; z++) {
+    const item = list.makeItem();
+    item.style.setProperty("--width", multiblockSize[1]);
+    const grid = new DomList(item);
+    grid.clear();
+    for (let y = 0; y < multiblockSize[1]; y++) {
+      for (let x = 0; x < multiblockSize[0]; x++) {
+        const cell = grid.makeItem();
+        cell.dataset.x = x.toString(10);
+        cell.dataset.y = y.toString(10);
+        cell.dataset.z = z.toString(10);
+        cell.dataset.tile = (-1).toString(10);
+        cell.appendChild(makeAtlasImage(-1));
+        cell.addEventListener("mouseenter", cellHoverEvent);
+        cell.addEventListener("mouseleave", cellHoverEvent);
+        cell.addEventListener("mousedown", cellClickEvent);
+        cell.addEventListener("mouseenter", cellClickEvent);
+        cell.addEventListener("mouseleave", cellClickEvent);
+        cell.addEventListener("contextmenu", cellClickEvent);
+        grid.addItem(cell);
+      }
+    }
+    list.addItem(item);
+  }
+}
diff --git a/scripts/resize-menus.js b/scripts/resize-menus.js
new file mode 100644
index 0000000..73092ee
--- /dev/null
+++ b/scripts/resize-menus.js
@@ -0,0 +1,43 @@
+import { recall, save } from "./storage.js";
+
+export function initializeMenuResizing() {
+  const handles = document.querySelectorAll('[data-resize]');
+  handles.forEach(handle => {
+    handle.addEventListener("mousedown", startResize);
+    const stored = recall(`${handle.dataset.resize}-size`);
+    if (stored) {
+      document.body.style.setProperty(`--${handle.dataset.resize}-size`, stored);
+    }
+  });
+}
+
+function startResize(e) {
+  window.addEventListener("mouseup", endResize);
+  window.addEventListener("mousemove", resize);
+  document.body.dataset.resizing = e.target.dataset.resize;
+}
+
+function resize(e) {
+  const resizing = document.body.dataset.resizing;
+  let size = 0.25;
+  switch (resizing) {
+    case "left-menu":
+      size = e.pageX / window.innerWidth;
+      break;
+    case "right-menu":
+      size = 1 - e.pageX / window.innerWidth;
+      break;
+    case "bottom-menu":
+      size = 1 - e.pageY / window.innerHeight;
+      break;
+  }
+  size = Math.max(0.05, Math.min(size, 0.5));
+  document.body.style.setProperty(`--${resizing}-size`, `${size*100}%`);
+  save(`${resizing}-size`, `${size*100}%`);
+}
+
+function endResize() {
+  window.removeEventListener("mouseup", endResize);
+  window.removeEventListener("mousemove", resize);
+  delete document.body.dataset.resizing;
+}
diff --git a/scripts/storage.js b/scripts/storage.js
new file mode 100644
index 0000000..f9e56c6
--- /dev/null
+++ b/scripts/storage.js
@@ -0,0 +1,11 @@
+export function save(key, value) {
+  localStorage.setItem(key, JSON.stringify(value));
+}
+
+export function recall(key, defaultValue = null) {
+  const item = localStorage.getItem(key);
+  if (item) {
+    return JSON.parse(item);
+  }
+  return defaultValue;
+}
diff --git a/scripts/tooltip.js b/scripts/tooltip.js
new file mode 100644
index 0000000..e69de29
diff --git a/style.css b/style.css
index ac98ddd..ba242d3 100644
--- a/style.css
+++ b/style.css
@@ -1,6 +1,22 @@
+* {
+    box-sizing: border-box;
+}
+
+:root {
+    font-family: sans-serif;
+    max-height: 100svh;
+    height: 100%;
+    overflow: hidden;
+}
+
 :root {
     --scale-factor: 2;
     --default-size: 16px;
+
+    --dark-bg: #990099;
+    --menu-border-color: #666;
+    --resize-handle-color: #666;
+    --resize-handle-width: 3px;
 }
 
 [data-state].hidden {
@@ -11,6 +27,9 @@
     display: flex;
     flex-wrap: wrap;
 }
+.list .hidden {
+    display: none;
+}
 .grid {
     display: grid;
     grid-template-columns: repeat(var(--width), calc(var(--scale-factor) * var(--default-size)));
@@ -25,34 +44,107 @@
 
 body {
     display: grid;
-    grid-template-columns: var(--left-nav, 400px) 1fr var(--right-nav, 300px);
-    grid-template-rows: 40px 1fr var(--bottom-nav, 200px);
+    grid-template-columns: var(--left-menu-size, 15%) 1fr var(--right-menu-size, 10%);
+    grid-template-rows: 28px 1fr var(--bottom-menu-size, 15%);
+    height: 100%;
+    margin: 0;
 }
 #top-menu {
     grid-column: 1 / -1;
     grid-row: 1;
+
+    background-color: var(--dark-bg);
 }
 #left-menu {
     grid-column: 1;
     grid-row: 2;
+    border-right: 1px solid var(--menu-border-color)
 }
 main {
     grid-column: 2;
     grid-row: 2;
+    overflow: auto;
 }
 #right-menu {
     grid-column: 3;
     grid-row: 2;
+    border-left: 1px solid var(--menu-border-color)
 }
 #bottom-menu {
     grid-column: 1 / -1;
     grid-row: 3;
+    border-top: 1px solid var(--menu-border-color)
+}
+
+#left-menu, #right-menu, #bottom-menu {
+    position: relative;
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+}
+[data-resize] {
+    position: absolute;
+    z-index: 1;
+    content: "";
+}
+#left-menu [data-resize], #right-menu [data-resize] {
+    border-left: 1px solid var(--resize-handle-color);
+    border-right: 1px solid var(--resize-handle-color);
+    margin: auto;
+    top: 0;
+    bottom: 0;
+    width: calc(var(--resize-handle-width) * 2 - 1px);
+    height: 1em;
+}
+#left-menu [data-resize] {
+    cursor: w-resize;
+    right: calc(var(--resize-handle-width) * -1);
+}
+#right-menu [data-resize] {
+    cursor: e-resize;
+    left: calc(var(--resize-handle-width) * -1);
+}
+#bottom-menu [data-resize] {
+    border-top: 1px solid var(--resize-handle-color);
+    border-bottom: 1px solid var(--resize-handle-color);
+    cursor: s-resize;
+    margin: auto;
+    left: 0;
+    right: 0;
+    top: calc(var(--resize-handle-width) * -1);
+    width: 1em;
+    height: calc(var(--resize-handle-width) * 2 - 1px);
+}
+body[data-resizing] {
+    user-select: none;
+}
+body[data-resizing="left-menu"] {
+    cursor: w-resize;
+}
+body[data-resizing="right-menu"] {
+    cursor: e-resize;
+}
+body[data-resizing="bottom-menu"] {
+    cursor: s-resize;
+}
+
+section {
+    overflow: auto;
+    padding: 0.5em;
+}
+
+input:not([type="checkbox"]):not([type="radio"]):not([type="file"]) {
+    width: 100%;
 }
 
 .atlas-texture {
     image-rendering: -moz-crisp-edges; /* Firefox fallback */
     image-rendering: pixelated;        /* Modern browsers */
 
+    pointer-events: none;
+    user-select: none;
+    -webkit-user-drag: none;
+
     background-size: calc(var(--scale-factor) * var(--atlas-resolution))
                      calc(var(--scale-factor) * var(--atlas-resolution));
 
@@ -61,15 +153,26 @@ main {
 
     background-position-x: calc(var(--scale-factor) * var(--raw-x) * -1);
     background-position-y: calc(var(--scale-factor) * var(--raw-y) * -1);
+
+    opacity: var(--atlas-opacity, 1);
 }
 .atlas-air {
+    pointer-events: none;
+    user-select: none;
+    -webkit-user-drag: none;
+
     width: calc(var(--scale-factor) * var(--size-x, var(--default-size)));
     height: calc(var(--scale-factor) * var(--size-y, var(--default-size)));
     outline: calc(var(--scale-factor) * 0.5px) solid var(--cell-empty-outline-color, #ccc);
+
+    opacity: var(--atlas-opacity, 1);
 }
 .atlas-air:hover, .atlas-texture:hover {
     outline: calc(var(--scale-factor) * 1px) solid var(--cell-hover-outline-color, #8888);
 }
+[data-preview], [data-preview-remove] {
+    --atlas-opacity: var(--atlas-preview-opacity, 0.5);
+}
 [data-highlight] {
     position: relative;
 }
@@ -77,31 +180,34 @@ main {
     content: '';
     position: absolute;
 }
+[data-highlight-distance="1"] {
+    --highlight-color: var(--highlight-near-color, #4848);
+}
 [data-highlight='x'] .atlas-texture:after, [data-highlight='x'] .atlas-air:after {
     inset:
             calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4)
             0
             calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4)
             0;
-    background-color: var(--higlight-color, #f808);
+    background-color: var(--highlight-color, #f808);
 }
 [data-highlight='y'] .atlas-texture:after, [data-highlight='y'] .atlas-air:after {
     inset:
             0
-            calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4)
+            calc(var(--scale-factor) * var(--size-x, var(--default-size)) * 0.4)
             0
-            calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4);
-    background-color: var(--higlight-color, #f808);
+            calc(var(--scale-factor) * var(--size-x, var(--default-size)) * 0.4);
+    background-color: var(--highlight-color, #f808);
 }
 [data-highlight='z'] .atlas-texture:after, [data-highlight='z'] .atlas-air:after {
     inset:
             calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4)
+            calc(var(--scale-factor) * var(--size-x, var(--default-size)) * 0.4)
             calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4)
-            calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4)
-            calc(var(--scale-factor) * var(--size-y, var(--default-size)) * 0.4);
-    background-color: var(--higlight-color, #f808);
+            calc(var(--scale-factor) * var(--size-x, var(--default-size)) * 0.4);
+    background-color: var(--highlight-color, #f808);
 }
 
 #block-list [data-active] {
     outline: calc(var(--scale-factor) * 1px) solid var(--block-active-outline-color, #000);
-}
\ No newline at end of file
+}