Tab Menu / 11 付箋風

デザイン見本

Tab 1
Tab 2
Tab 3

Tab 1 Content

This is the content of Tab 1 in the sticky note style design. It features a yellow sticky note appearance with a friendly and approachable design.

Tab 2 Content

This is the content of Tab 2 in the sticky note style design. It's a simple and user-friendly design.

Tab 3 Content

This is the content of Tab 3 in the sticky note style design. It recreates the natural appearance of sticky notes.

ノートに貼られた付箋（ふせん）を模したアナログ感のあるデザインです。選択されたタブが少し浮き上がり、ドロップシャドウで立体感を表現しています。情報整理ツールや教育系サイトなど、親しみやすさを重視する場合におすすめです。

実装コード

HTML

<div class="tab-container">
  <ul>
    <li class="selected" data-id="tab-1">Tab 1</li>
    <li data-id="tab-2">Tab 2</li>
    <li data-id="tab-3">Tab 3</li>
  </ul>
  <div class="tab-content selected" id="tab-1">
    Tab 1 のコンテンツ
  </div>
  <div class="tab-content" id="tab-2">
    Tab 2 のコンテンツ
  </div>
  <div class="tab-content" id="tab-3">
    Tab 3 のコンテンツ
  </div>
</div>

CSS

.tab-container {
  border-radius: 0;
  position: relative;
}

.tab-container ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  position: relative;
}

.tab-container ul li {
  flex: 1;
  padding: 16px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  color: #666;
  font-weight: 500;
  font-family: 'Arial', sans-serif;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px 8px 0 0;
  box-shadow: 
      0 2px 4px rgba(0, 0, 0, 0.1),
      0 1px 3px rgba(0, 0, 0, 0.08);
  transform: rotate(0deg);
  transform-origin: bottom center;
}

.tab-container ul li::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid #fff;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tab-container ul li.selected {
  color: #333;
  background: #fff9c4;
  border-color: #fbc02d;
  box-shadow: 
      0 4px 12px rgba(251, 192, 45, 0.3),
      0 2px 6px rgba(0, 0, 0, 0.15);
  transform: rotate(0deg) translateY(-4px);
  z-index: 3;
}

.tab-container ul li.selected::before {
  opacity: 1;
  border-bottom-color: #fff9c4;
}

.tab-container ul li.selected::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
      repeating-linear-gradient(
          45deg,
          transparent,
          transparent 2px,
          rgba(251, 192, 45, 0.1) 2px,
          rgba(251, 192, 45, 0.1) 4px
      );
  border-radius: 8px 8px 0 0;
  pointer-events: none;
}

.tab-container ul li:not(.selected):hover {
  background: #fff8e1;
  border-color: #ffb300;
  transform: rotate(0deg) translateY(-2px);
  box-shadow: 
      0 3px 8px rgba(255, 179, 0, 0.2),
      0 2px 4px rgba(0, 0, 0, 0.1);
}

.tab-container .tab-content {
  display: none;
  padding: 30px;
  min-height: 180px;
  background: #fff;
  color: #333;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 
      0 4px 12px rgba(0, 0, 0, 0.1),
      inset 0 1px 0 rgba(255, 255, 255, 0.8);
  position: relative;
  margin-top: 10px;
}

.tab-container .tab-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #fff9c4, #fbc02d, #fff9c4);
  border-radius: 8px 8px 0 0;
}

.tab-container .tab-content.selected {
  display: block;
  animation: stickyNoteIn 0.4s ease;
}

@keyframes stickyNoteIn {
  from { 
      opacity: 0; 
      transform: translateY(-10px) scale(0.95);
  }
  to { 
      opacity: 1; 
      transform: translateY(0) scale(1);
  }
}

const tabContainer = document.querySelector('.tab-container');
const tabMenuItems = tabContainer.querySelectorAll('ul li');
const tabContents = tabContainer.querySelectorAll('.tab-content');

tabMenuItems.forEach(tabMenuItem => {
  tabMenuItem.addEventListener('click', () => {
    tabMenuItems.forEach(item => {
      item.classList.remove('selected');
    });
    tabMenuItem.classList.add('selected');

    tabContents.forEach(tabContent => {
      tabContent.classList.remove('selected');
    });
    document.getElementById(tabMenuItem.dataset.id).classList.add('selected');
  });
});