Accordion / 011 — 付箋風｜Sticky Note Style

デザイン見本

Yellow sticky note appearance
Natural paper texture
Friendly and approachable

黄色い付箋をモチーフにした親しみやすいデザイン。コンテンツが表示される際のアニメーションや、上部のカラーバーなど、細部までこだわった作りになっています。

実装コード

HTML

<div class="container">
    <div class="btn-box">
        <button data-default-text="Sticky Note Style Accordion" data-open-text="Close">Sticky Note Style Accordion</button>
    </div>
    <div class="content">
        <ul>
            <li>Yellow sticky note appearance</li>
            <li>Natural paper texture</li>
            <li>Friendly and approachable</li>
        </ul>
    </div>
</div>

CSS

/* アニメーション定義 */
@keyframes acc11-stickyIn {
    0% {
        opacity: 0;
        transform: translateY(-10px) scale(0.95)
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1)
    }
}

.container {
    width: 100%;
    margin: 4px;
    position: relative;
}

.container .btn-box button {
    width: 100%;
    padding: 16px 20px;
    background: #fff9c4;
    border: 1px solid #fbc02d;
    border-radius: 8px 8px 0 0;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    position: relative;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.container .btn-box button::after {
    content: '▼';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #fbc02d;
    font-size: 13px;
    transition: transform 0.3s ease;
}

.container .btn-box button:hover {
    background: #fff8e1;
}

.container .content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: relative;
    margin-top: 0;
}

.container .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;
}

.container .content.appear {
    max-height: 200px;
    margin-top: 8px;
    animation: acc11-stickyIn 0.4s ease;
}

.container:has(.content.appear) .btn-box button::after {
    transform: translateY(-50%) rotate(180deg);
}

.container .content ul {
    list-style: none;
    padding: 20px;
    margin: 0;
}

.container .content li {
    padding: 8px 0 8px 16px;
    color: #333;
    border-bottom: 1px solid #f0f0f0;
    font-size: 13px;
    position: relative;
}

.container .content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #fbc02d;
    font-weight: bold;
}

.container .content li:last-child {
    border-bottom: none;
}

document.addEventListener("DOMContentLoaded", () => {
    document.querySelectorAll('.container').forEach(container => {
        const button = container.querySelector('.btn-box button');
        // .more または .content を取得
        const content = container.querySelector('.more, .content');
        
        if (button && content) {
            button.addEventListener('click', function() {
                content.classList.toggle('appear');
                
                // ボタンテキストの切り替え
                if (content.classList.contains('appear')) {
                    this.textContent = this.dataset.openText || 'Close';
                } else {
                    this.textContent = this.dataset.defaultText;
                }
            });
        }
    });
});