Will it work?

src/page/about/about.html.ts

@@ -7,8 +7,10 @@ export const generate = (
   aPictureOf: string
 ): html => `
     <section id="about">
-        <header>
-            <img alt="${aPictureOf} ${name}" src="${picture}"/>
-            <h1>${name}</h1>
-        </header>
+        <div class="container">
+            <header>
+                <img alt="${aPictureOf} ${name}" src="${picture}"/>
+                <h1>${name}</h1>
+            </header>
+        </div>
     </section>`;

src/page/about/about.scss

@@ -2,26 +2,42 @@
 @import "../../style/vars";
 
 #about {
-  margin-top: $normal-margin - $small-margin;
-  padding: $small-margin;
+  width: 100%;
+  backdrop-filter: blur($blur-radius);
+  padding: $normal-margin;
 
-  header {
-    @include center-children();
+  .container {
+    width: $body-width;
+    margin: auto;
 
-    h1,
-    img {
-      @include title-font();
+    header {
+      @include center-children();
+
+      h1,
+      img {
+        @include title-font();
+      }
+
+      img {
+        @include square(4ch);
+        border-radius: 100%;
+        margin-right: 1.5ex;
+        cursor: pointer;
+      }
+
+      @media (max-width: $breakpoint-width) {
+        flex-direction: column;
+        img {
+          margin: 0 0 $small-margin 0;
+        }
+        h1 {
+          text-align: center;
+        }
+      }
     }
 
-    img {
-      @include square(4ch);
-      border-radius: 100%;
-      margin-right: 1.5ex;
-      cursor: pointer;
+    * {
+      text-align: justify;
     }
   }
-
-  * {
-    text-align: justify;
-  }
 }

src/page/about/about.ts

@@ -10,8 +10,8 @@ export class PageHeader extends PageElement {
     const root = createElement(generate(header, aPictureOf));
     const content = new PageContent(header.about);
 
-    root.appendChild(content.getElement());
     super([content]);
     this.setElement(root);
+    this.query(".container").appendChild(content.getElement());
   }
 }

src/page/background/background.html.ts

@@ -5,6 +5,7 @@ export const generate = (
   count: number,
   color?: () => string,
   height?: () => number,
+  isAnimated?: (index) => boolean,
   transform?: () => string
 ): html => `
     <section class="background">
@@ -13,8 +14,12 @@ export const generate = (
             ? new Array(count)
                 .fill(0, 0, count)
                 .map(
-                  _ =>
-                    `<div style="background-color: ${color()}; height: ${height()}px; transform: ${transform()}"></div>`
+                  (_, i) => `
+                    <div class="${
+                      isAnimated(i) ? "animated" : ""
+                    }" style="background-color: ${color()}; height: ${height()}px; transform: ${transform()}"
+                    ></div>
+                `
                 )
                 .join("")
             : ""

src/page/background/background.scss

@@ -9,11 +9,25 @@
   transform-style: preserve-3d;
   overflow: hidden;
 
+  transition: height $slow-transition-time, width $slow-transition-time;
+
   div {
     border-radius: 10000px;
     position: absolute;
     left: 0;
     top: 0;
     width: 160px;
+
+    &.animated {
+      animation: fade-in 1s linear forwards;
+      @keyframes fade-in {
+        from {
+          opacity: 0;
+        }
+        to {
+          opacity: 1;
+        }
+      }
+    }
   }
 }

src/page/background/background.ts

@@ -13,6 +13,9 @@ export class PageBackground extends PageElement {
   private colors = ["#fff9e077", "#ffd6d677"];
   private blobSize = 150; // with margin
   private perspective = 5;
+  private currentRealHeight = 0;
+  private currentRealWidth = 0;
+  private currentBlobCount = 0;
 
   public constructor() {
     super();
@@ -39,6 +42,7 @@ export class PageBackground extends PageElement {
       siblings.map(c => {
         const computedStyle = window.getComputedStyle(c);
         return (
+          // ignores margin collapse
           c.clientHeight +
           parseInt(computedStyle.marginTop) +
           parseInt(computedStyle.marginBottom) +
@@ -48,34 +52,45 @@ export class PageBackground extends PageElement {
       })
     );
 
-    const random = randomFactory(42);
+    if (height > this.currentRealHeight || width > this.currentRealWidth) {
+      this.currentRealHeight = height;
+      this.currentRealWidth = width;
 
-    const count = Math.round((width * height) / this.blobSize ** 2);
+      const random = randomFactory(44);
 
-    const randomWithKnownZ = (z: number, bound: number): number => {
-      const l = (bound * (this.perspective + z)) / this.perspective;
-      return randomInInterval(-(l / 2 - bound / 2), l / 2 + bound / 2, random);
-    };
+      const count = Math.round((width * height) / this.blobSize ** 2);
 
-    this.setElement(
-      createElement(
-        generate(
-          count,
-          () => choose(this.colors, random),
-          () => randomInInterval(160, 750, random),
-          () => {
-            const z = randomInInterval(-12, -25, random);
-            return `
+      const randomWithKnownZ = (z: number, bound: number): number => {
+        const l = (bound * (this.perspective + z)) / this.perspective;
+        return randomInInterval(
+          -(l / 2 - bound / 2),
+          l / 2 + bound / 2,
+          random
+        );
+      };
+
+      this.setElement(
+        createElement(
+          generate(
+            count,
+            () => choose(this.colors, random),
+            () => randomInInterval(160, 750, random),
+            i => i >= this.currentBlobCount,
+            () => {
+              const z = randomInInterval(-12, -25, random);
+              return `
               translateX(${randomWithKnownZ(-z, width)}px)
               translateY(${randomWithKnownZ(-z, height)}px)
               translateZ(${z}px)
               rotate(-20deg)
             `;
-          }
+            }
+          )
         )
-      )
-    );
+      );
 
+      this.currentBlobCount = count;
+    }
     this.getElement().style.width = `${width}px`;
     this.getElement().style.height = `${height}px`;
   }

src/page/content/content.scss

@@ -1,10 +1,10 @@
-@import "../../style/vars";
+@use "../../style/vars";
 
 .content {
-  margin-top: $small-margin;
+  margin-top: vars.$small-margin;
 
   * {
-    margin-top: $line-height;
+    margin-top: vars.$line-height;
   }
 
   p {

src/page/footer/footer.scss

@@ -7,7 +7,7 @@ footer#page-footer {
   margin: $small-margin auto 0 auto;
   padding: $normal-margin $normal-margin $line-height $normal-margin;
   width: 100%;
-  backdrop-filter: blur(5px);
+  backdrop-filter: blur($blur-radius);
 
   h2 {
     @include title-font();

src/page/image-viewer/image-viewer.scss

@@ -4,7 +4,6 @@
 #image-viewer {
   @include center-children();
   display: none;
-
   position: fixed;
   width: 100%;
   height: 100%;
@@ -22,6 +21,7 @@
   #cancel {
     @include square($icon-size);
     position: absolute;
+    box-sizing: content-box;
     padding: $normal-margin;
     right: 0;
     top: 0;

src/page/image-viewer/image-viewer.ts

@@ -8,9 +8,8 @@ export class PageImageViewer extends PageElement {
   public constructor() {
     super();
     const root = createElement(generate());
-    (root.querySelector("#cancel") as HTMLElement).onclick = () =>
-      PageImageViewer.hide(root);
     this.setElement(root);
+    this.query("#cancel").onclick = () => PageImageViewer.hide(root);
   }
 
   protected handleEvent(event: PageEvent, parent: PageElement) {

src/page/index.ts

@@ -8,15 +8,21 @@ import { Page } from "../framework/page";
 
 export const create = ({ config, header, timeline, footer }: Portfolio) => {
   document.title = header.name;
-
   new Page(
     [
-      new PageBackground(),
-      new PageHeader(header, config.aPictureOf),
-      new PageTimeline(timeline, config.showMore, config.showLess),
-      new PageFooter(footer),
-      new PageImageViewer()
+      new PageImageViewer(),
+      new Page(
+        [
+          new PageBackground(),
+          new PageHeader(header, config.aPictureOf),
+          new PageTimeline(timeline, config.showMore, config.showLess),
+          new PageFooter(footer)
+        ],
+        document.body.querySelector("main"),
+        false
+      )
     ],
-    document.body.querySelector("main")
+    document.body,
+    true
   );
 };

src/page/timeline/timeline-element/timeline-element.scss

@@ -23,7 +23,7 @@
       @include square($icon-size);
       position: absolute;
       top: 33%;
-      left: -0.5 * $icon-size - (1.5 * $line-width);
+      left: calc(-0.5 * #{$icon-size} - (1.5 * #{$line-width}));
       border: $line-width solid $normal-text-color;
       border-radius: 100%;
       background: $background;

src/page/timeline/timeline-element/timeline-element.ts

@@ -37,21 +37,31 @@ export class PageTimelineElement extends PageElement {
       this.more.style.height = "0";
       PageTimelineElement.show(showMore);
       PageTimelineElement.hide(showLess);
+      this.notifyOfHeightChange();
     } else {
-      this.openMoreToFullHeight();
       PageTimelineElement.hide(showMore);
       PageTimelineElement.show(showLess);
+      this.openMoreToFullHeight();
     }
 
     this.isOpen = !this.isOpen;
-    this.eventBroadcaster?.broadcastEvent({
-      type: PageEventType.onBodyDimensionsChanged
-    });
+  }
+
+  private notifyOfHeightChange(change: number = null) {
+    const notify = () =>
+      this.eventBroadcaster?.broadcastEvent({
+        type: PageEventType.onBodyDimensionsChanged,
+        data: change
+      });
+    notify();
+    setTimeout(notify, 350);
   }
 
   private static hide(element: HTMLElement) {
     element.style.opacity = "0";
-    setTimeout(() => (element.style.visibility = "hidden"), 350);
+    setTimeout(() => {
+      element.style.visibility = "hidden";
+    }, 350);
   }
 
   private static show(element: HTMLElement) {
@@ -61,6 +71,7 @@ export class PageTimelineElement extends PageElement {
 
   private openMoreToFullHeight() {
     this.more.style.height = `${this.more.scrollHeight.toString()}px`;
+    this.notifyOfHeightChange();
   }
 
   private handleResize() {