infinite-agents-public/src_enhanced/ui_enhanced_4.html

882 lines
32 KiB
HTML

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Cards Enhanced</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
:root {
--primary: #6366f1;
--primary-light: #818cf8;
--primary-dark: #4f46e5;
--secondary: #ec4899;
--success: #10b981;
--danger: #ef4444;
--gray-50: #f9fafb;
--gray-100: #f3f4f6;
--gray-200: #e5e7eb;
--gray-300: #d1d5db;
--gray-400: #9ca3af;
--gray-500: #6b7280;
--gray-600: #4b5563;
--gray-700: #374151;
--gray-800: #1f2937;
--gray-900: #111827;
--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
--shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
--shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
--shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
--radius: 12px;
--radius-lg: 16px;
--transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
--transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
line-height: 1.6;
color: var(--gray-900);
background: var(--gray-50);
padding: 2rem 1rem;
min-height: 100vh;
}
main {
max-width: 1400px;
margin: 0 auto;
}
h1 {
font-size: 2.5rem;
font-weight: 800;
margin-bottom: 0.5rem;
background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
}
.subtitle {
color: var(--gray-600);
font-size: 1.125rem;
margin-bottom: 3rem;
}
/* Card Grid */
.card-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
gap: 2rem;
margin-bottom: 3rem;
}
/* Base Card Styles */
.card {
background: white;
border-radius: var(--radius-lg);
overflow: hidden;
position: relative;
transition: var(--transition);
transform-style: preserve-3d;
cursor: pointer;
will-change: transform, box-shadow;
}
.card:hover {
transform: translateY(-4px);
box-shadow: var(--shadow-xl);
}
.card.selected {
outline: 3px solid var(--primary);
outline-offset: -3px;
}
/* Card Image with Lazy Loading */
.card-image {
position: relative;
width: 100%;
height: 200px;
overflow: hidden;
background: var(--gray-200);
}
.card-image img {
width: 100%;
height: 100%;
object-fit: cover;
transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), filter 0.3s ease;
}
.card:hover .card-image img {
transform: scale(1.05);
}
.card-image.loading::before {
content: '';
position: absolute;
inset: 0;
background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
0% { transform: translateX(-100%); }
100% { transform: translateX(100%); }
}
.card-image img.blur-up {
filter: blur(20px);
}
.card-image img.loaded {
filter: blur(0);
}
/* Card Content */
.card-content {
padding: 1.5rem;
}
.card-title {
font-size: 1.25rem;
font-weight: 700;
margin-bottom: 0.5rem;
color: var(--gray-900);
}
.card-description {
color: var(--gray-600);
line-height: 1.5;
margin-bottom: 1rem;
}
.card-meta {
display: flex;
justify-content: space-between;
align-items: center;
font-size: 0.875rem;
color: var(--gray-500);
}
/* Action Overlay */
.card-actions {
position: absolute;
top: 1rem;
right: 1rem;
display: flex;
gap: 0.5rem;
opacity: 0;
transform: translateY(-10px);
transition: var(--transition);
z-index: 10;
}
.card:hover .card-actions,
.card:focus-within .card-actions {
opacity: 1;
transform: translateY(0);
}
.action-btn {
width: 40px;
height: 40px;
border-radius: 50%;
background: rgba(255, 255, 255, 0.9);
backdrop-filter: blur(10px);
border: none;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
transition: var(--transition-fast);
box-shadow: var(--shadow-md);
}
.action-btn:hover {
background: white;
transform: scale(1.1);
box-shadow: var(--shadow-lg);
}
.action-btn:active {
transform: scale(0.95);
}
.action-btn svg {
width: 20px;
height: 20px;
stroke: var(--gray-700);
stroke-width: 2;
fill: none;
}
.action-btn.liked svg {
fill: var(--danger);
stroke: var(--danger);
}
/* Flip Card */
.flip-card {
perspective: 1000px;
height: 400px;
}
.flip-card-inner {
position: relative;
width: 100%;
height: 100%;
text-align: center;
transition: transform 0.6s;
transform-style: preserve-3d;
}
.flip-card.flipped .flip-card-inner {
transform: rotateY(180deg);
}
.flip-card-front,
.flip-card-back {
position: absolute;
width: 100%;
height: 100%;
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
border-radius: var(--radius-lg);
overflow: hidden;
}
.flip-card-back {
transform: rotateY(180deg);
background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
color: white;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
padding: 2rem;
}
.flip-trigger {
position: absolute;
bottom: 1rem;
right: 1rem;
width: 36px;
height: 36px;
border-radius: 50%;
background: var(--primary);
color: white;
border: none;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
transition: var(--transition-fast);
z-index: 10;
}
.flip-trigger:hover {
transform: scale(1.1);
background: var(--primary-dark);
}
/* Expandable Card */
.expandable-card {
overflow: visible;
}
.expandable-content {
max-height: 0;
overflow: hidden;
transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.expandable-card.expanded .expandable-content {
max-height: 300px;
}
.expand-trigger {
background: none;
border: none;
color: var(--primary);
font-weight: 600;
cursor: pointer;
display: flex;
align-items: center;
gap: 0.5rem;
transition: var(--transition-fast);
margin-top: 1rem;
}
.expand-trigger:hover {
color: var(--primary-dark);
}
.expand-trigger svg {
width: 20px;
height: 20px;
transition: transform 0.3s ease;
}
.expandable-card.expanded .expand-trigger svg {
transform: rotate(180deg);
}
/* Loading Skeleton */
.card-skeleton {
background: white;
border-radius: var(--radius-lg);
overflow: hidden;
box-shadow: var(--shadow);
}
.skeleton {
background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
background-size: 200% 100%;
animation: loading 1.5s infinite;
}
@keyframes loading {
0% { background-position: 200% 0; }
100% { background-position: -200% 0; }
}
.skeleton-image {
height: 200px;
}
.skeleton-content {
padding: 1.5rem;
}
.skeleton-title {
height: 24px;
width: 70%;
margin-bottom: 1rem;
border-radius: 4px;
}
.skeleton-text {
height: 16px;
margin-bottom: 0.5rem;
border-radius: 4px;
}
.skeleton-text:last-child {
width: 80%;
}
/* Selection Mode */
.selection-mode {
display: flex;
align-items: center;
gap: 1rem;
margin-bottom: 2rem;
padding: 1rem 1.5rem;
background: white;
border-radius: var(--radius);
box-shadow: var(--shadow);
}
.selection-checkbox {
width: 20px;
height: 20px;
cursor: pointer;
}
.selection-count {
color: var(--gray-600);
font-weight: 500;
}
.selection-actions {
margin-left: auto;
display: flex;
gap: 0.5rem;
}
.btn {
padding: 0.5rem 1rem;
border-radius: 8px;
border: none;
font-weight: 600;
cursor: pointer;
transition: var(--transition-fast);
font-size: 0.875rem;
}
.btn-primary {
background: var(--primary);
color: white;
}
.btn-primary:hover {
background: var(--primary-dark);
transform: translateY(-1px);
box-shadow: var(--shadow-md);
}
.btn-secondary {
background: var(--gray-200);
color: var(--gray-700);
}
.btn-secondary:hover {
background: var(--gray-300);
}
/* Mobile Touch Support */
@media (max-width: 768px) {
.card-grid {
grid-template-columns: 1fr;
gap: 1.5rem;
}
.card {
touch-action: pan-y;
user-select: none;
}
.card.swiping {
transition: none;
}
.card-actions {
opacity: 1;
transform: translateY(0);
}
}
/* Focus Styles */
.card:focus-visible,
.action-btn:focus-visible,
.flip-trigger:focus-visible,
.expand-trigger:focus-visible {
outline: 2px solid var(--primary);
outline-offset: 2px;
}
/* Print Styles */
@media print {
.card {
break-inside: avoid;
box-shadow: none;
border: 1px solid var(--gray-300);
}
}
</style>
</head>
<body>
<main>
<h1>Cards - Enhanced</h1>
<p class="subtitle">Beautiful, interactive cards with smooth animations and intelligent behaviors</p>
<!-- Selection Mode -->
<div class="selection-mode" id="selectionMode" style="display: none;">
<input type="checkbox" class="selection-checkbox" id="selectAll">
<span class="selection-count">0 selected</span>
<div class="selection-actions">
<button class="btn btn-primary">Share</button>
<button class="btn btn-secondary">Archive</button>
</div>
</div>
<!-- Card Grid -->
<div class="card-grid" id="cardGrid">
<!-- Loading Skeletons -->
<div class="card card-skeleton">
<div class="skeleton skeleton-image"></div>
<div class="skeleton-content">
<div class="skeleton skeleton-title"></div>
<div class="skeleton skeleton-text"></div>
<div class="skeleton skeleton-text"></div>
<div class="skeleton skeleton-text"></div>
</div>
</div>
<div class="card card-skeleton">
<div class="skeleton skeleton-image"></div>
<div class="skeleton-content">
<div class="skeleton skeleton-title"></div>
<div class="skeleton skeleton-text"></div>
<div class="skeleton skeleton-text"></div>
<div class="skeleton skeleton-text"></div>
</div>
</div>
<div class="card card-skeleton">
<div class="skeleton skeleton-image"></div>
<div class="skeleton-content">
<div class="skeleton skeleton-title"></div>
<div class="skeleton skeleton-text"></div>
<div class="skeleton skeleton-text"></div>
<div class="skeleton skeleton-text"></div>
</div>
</div>
</div>
<!-- Special Cards Section -->
<h2 style="margin: 3rem 0 1.5rem; font-size: 1.875rem; font-weight: 700;">Special Card Types</h2>
<div class="card-grid">
<!-- Flip Card -->
<div class="flip-card" id="flipCard">
<div class="flip-card-inner">
<div class="flip-card-front card">
<div class="card-image">
<img src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='200'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0%25' y1='0%25' x2='100%25' y2='100%25'%3E%3Cstop offset='0%25' style='stop-color:%234f46e5;stop-opacity:1' /%3E%3Cstop offset='100%25' style='stop-color:%23ec4899;stop-opacity:1' /%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='400' height='200' fill='url(%23g)'/%3E%3Ctext x='50%25' y='50%25' text-anchor='middle' dy='.3em' fill='white' font-family='Arial' font-size='24' font-weight='bold'%3EFlip Me%3C/text%3E%3C/svg%3E" alt="Flip card front">
</div>
<div class="card-content">
<h3 class="card-title">Interactive Flip Card</h3>
<p class="card-description">Click the button to reveal additional information on the back of this card.</p>
<button class="flip-trigger" aria-label="Flip card">
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor">
<path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/>
<circle cx="12" cy="12" r="3"/>
</svg>
</button>
</div>
</div>
<div class="flip-card-back">
<h3 style="font-size: 1.5rem; margin-bottom: 1rem;">Additional Details</h3>
<p style="margin-bottom: 1.5rem;">This is the back of the card with more detailed information that was hidden from the initial view.</p>
<ul style="text-align: left; margin-bottom: 1.5rem;">
<li>Hidden feature #1</li>
<li>Secret detail #2</li>
<li>Extra information #3</li>
</ul>
<button class="btn" style="background: white; color: var(--primary);" onclick="document.getElementById('flipCard').classList.remove('flipped')">
Flip Back
</button>
</div>
</div>
</div>
<!-- Expandable Card -->
<div class="card expandable-card" id="expandableCard">
<div class="card-image">
<img src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='200'%3E%3Cdefs%3E%3ClinearGradient id='g2' x1='0%25' y1='0%25' x2='100%25' y2='100%25'%3E%3Cstop offset='0%25' style='stop-color:%2310b981;stop-opacity:1' /%3E%3Cstop offset='100%25' style='stop-color:%236366f1;stop-opacity:1' /%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='400' height='200' fill='url(%23g2)'/%3E%3Ctext x='50%25' y='50%25' text-anchor='middle' dy='.3em' fill='white' font-family='Arial' font-size='24' font-weight='bold'%3EExpandable%3C/text%3E%3C/svg%3E" alt="Expandable card">
</div>
<div class="card-content">
<h3 class="card-title">Expandable Content Card</h3>
<p class="card-description">This card can expand to show additional content with a smooth animation.</p>
<button class="expand-trigger">
<span>Show more</span>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor">
<path d="M19 9l-7 7-7-7"/>
</svg>
</button>
<div class="expandable-content">
<div style="padding-top: 1rem; border-top: 1px solid var(--gray-200);">
<h4 style="font-weight: 600; margin-bottom: 0.5rem;">Extended Information</h4>
<p style="color: var(--gray-600); margin-bottom: 1rem;">Here's the additional content that was hidden. It smoothly animates into view when expanded.</p>
<ul style="color: var(--gray-600); padding-left: 1.5rem;">
<li>Extra detail that wasn't visible before</li>
<li>Another piece of hidden information</li>
<li>More content to explore</li>
</ul>
</div>
</div>
</div>
<div class="card-actions">
<button class="action-btn" aria-label="Like">
<svg viewBox="0 0 24 24">
<path d="M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z"/>
</svg>
</button>
<button class="action-btn" aria-label="Share">
<svg viewBox="0 0 24 24">
<path d="M4 12v8a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2v-8"/>
<polyline points="16 6 12 2 8 6"/>
<line x1="12" y1="2" x2="12" y2="15"/>
</svg>
</button>
</div>
</div>
</div>
</main>
<script>
// Card data
const cardData = [
{
title: "Mountain Vista",
description: "Experience breathtaking views from the mountain peaks with crystal clear skies.",
image: "https://images.unsplash.com/photo-1506905925346-21bda4d32df4?w=400&h=200&fit=crop",
author: "Alex Chen",
date: "2 days ago"
},
{
title: "Ocean Breeze",
description: "Feel the calming waves and gentle sea breeze at this pristine beach location.",
image: "https://images.unsplash.com/photo-1505142468610-359e7d316be0?w=400&h=200&fit=crop",
author: "Sarah Miller",
date: "1 week ago"
},
{
title: "Forest Trail",
description: "Discover hidden paths through ancient forests filled with wildlife and wonder.",
image: "https://images.unsplash.com/photo-1441974231531-c6227db76b6e?w=400&h=200&fit=crop",
author: "David Park",
date: "3 days ago"
},
{
title: "Desert Sunset",
description: "Watch the sun paint the desert landscape in brilliant shades of orange and red.",
image: "https://images.unsplash.com/photo-1509316785289-025f5b846b35?w=400&h=200&fit=crop",
author: "Maria Garcia",
date: "5 days ago"
},
{
title: "City Lights",
description: "Experience the vibrant energy of the city as it comes alive after dark.",
image: "https://images.unsplash.com/photo-1514565131-fce0801e5785?w=400&h=200&fit=crop",
author: "James Wilson",
date: "1 day ago"
},
{
title: "Lakeside Calm",
description: "Find peace and tranquility by the still waters of this mountain lake.",
image: "https://images.unsplash.com/photo-1439066615861-d1af74d74000?w=400&h=200&fit=crop",
author: "Emma Thompson",
date: "4 days ago"
}
];
// Create card HTML
function createCard(data, index) {
return `
<div class="card" data-index="${index}" tabindex="0" role="article" aria-label="${data.title}">
<div class="card-image loading">
<img
src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='10'%3E%3Crect width='20' height='10' fill='%23e5e7eb'/%3E%3C/svg%3E"
data-src="${data.image}"
alt="${data.title}"
class="blur-up"
>
</div>
<div class="card-content">
<h3 class="card-title">${data.title}</h3>
<p class="card-description">${data.description}</p>
<div class="card-meta">
<span>${data.author}</span>
<span>${data.date}</span>
</div>
</div>
<div class="card-actions">
<button class="action-btn like-btn" aria-label="Like ${data.title}">
<svg viewBox="0 0 24 24">
<path d="M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z"/>
</svg>
</button>
<button class="action-btn" aria-label="Share ${data.title}">
<svg viewBox="0 0 24 24">
<path d="M4 12v8a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2v-8"/>
<polyline points="16 6 12 2 8 6"/>
<line x1="12" y1="2" x2="12" y2="15"/>
</svg>
</button>
<button class="action-btn" aria-label="More options for ${data.title}">
<svg viewBox="0 0 24 24">
<circle cx="12" cy="12" r="1"/>
<circle cx="12" cy="5" r="1"/>
<circle cx="12" cy="19" r="1"/>
</svg>
</button>
</div>
</div>
`;
}
// Initialize cards
const cardGrid = document.getElementById('cardGrid');
setTimeout(() => {
cardGrid.innerHTML = cardData.map((data, index) => createCard(data, index)).join('');
initializeCards();
}, 1500);
// Initialize card functionality
function initializeCards() {
// Lazy loading images
const images = document.querySelectorAll('.card-image img[data-src]');
const imageObserver = new IntersectionObserver((entries) => {
entries.forEach(entry => {
if (entry.isIntersecting) {
const img = entry.target;
const parent = img.parentElement;
// Load high-res image
const highResImg = new Image();
highResImg.src = img.dataset.src;
highResImg.onload = () => {
img.src = highResImg.src;
setTimeout(() => {
img.classList.add('loaded');
parent.classList.remove('loading');
}, 50);
};
imageObserver.unobserve(img);
}
});
});
images.forEach(img => imageObserver.observe(img));
// Like button functionality
document.querySelectorAll('.like-btn').forEach(btn => {
btn.addEventListener('click', (e) => {
e.stopPropagation();
btn.classList.toggle('liked');
// Haptic feedback on mobile
if ('vibrate' in navigator) {
navigator.vibrate(10);
}
});
});
// Card selection
let selectedCards = new Set();
let selectionMode = false;
document.querySelectorAll('.card').forEach(card => {
card.addEventListener('click', (e) => {
if (e.target.closest('.action-btn') || e.target.closest('.flip-trigger') || e.target.closest('.expand-trigger')) {
return;
}
if (e.shiftKey || selectionMode) {
const index = card.dataset.index;
if (selectedCards.has(index)) {
selectedCards.delete(index);
card.classList.remove('selected');
} else {
selectedCards.add(index);
card.classList.add('selected');
}
updateSelectionMode();
}
});
// Keyboard navigation
card.addEventListener('keydown', (e) => {
if (e.key === 'Enter' || e.key === ' ') {
e.preventDefault();
card.click();
}
});
});
// Selection mode controls
function updateSelectionMode() {
const selectionModeEl = document.getElementById('selectionMode');
if (selectedCards.size > 0) {
selectionMode = true;
selectionModeEl.style.display = 'flex';
selectionModeEl.querySelector('.selection-count').textContent = `${selectedCards.size} selected`;
} else {
selectionMode = false;
selectionModeEl.style.display = 'none';
}
}
document.getElementById('selectAll').addEventListener('change', (e) => {
const cards = document.querySelectorAll('.card[data-index]');
if (e.target.checked) {
cards.forEach(card => {
selectedCards.add(card.dataset.index);
card.classList.add('selected');
});
} else {
selectedCards.clear();
cards.forEach(card => card.classList.remove('selected'));
}
updateSelectionMode();
});
// Touch gestures for mobile
let touchStartX = 0;
let touchStartY = 0;
let currentCard = null;
document.querySelectorAll('.card').forEach(card => {
card.addEventListener('touchstart', (e) => {
touchStartX = e.touches[0].clientX;
touchStartY = e.touches[0].clientY;
currentCard = card;
}, { passive: true });
card.addEventListener('touchmove', (e) => {
if (!touchStartX || !currentCard) return;
const touchEndX = e.touches[0].clientX;
const touchEndY = e.touches[0].clientY;
const diffX = touchStartX - touchEndX;
const diffY = touchStartY - touchEndY;
// Only handle horizontal swipes
if (Math.abs(diffX) > Math.abs(diffY) && Math.abs(diffX) > 50) {
currentCard.classList.add('swiping');
currentCard.style.transform = `translateX(${-diffX * 0.5}px)`;
}
}, { passive: true });
card.addEventListener('touchend', () => {
if (currentCard) {
currentCard.classList.remove('swiping');
currentCard.style.transform = '';
currentCard = null;
}
touchStartX = 0;
touchStartY = 0;
});
});
}
// Flip card functionality
document.querySelector('.flip-trigger').addEventListener('click', (e) => {
e.stopPropagation();
document.getElementById('flipCard').classList.add('flipped');
});
// Expandable card functionality
document.querySelector('.expand-trigger').addEventListener('click', (e) => {
e.stopPropagation();
const card = document.getElementById('expandableCard');
const isExpanded = card.classList.contains('expanded');
card.classList.toggle('expanded');
const trigger = e.currentTarget;
const text = trigger.querySelector('span');
text.textContent = isExpanded ? 'Show more' : 'Show less';
// Announce state change for screen readers
const announcement = document.createElement('div');
announcement.setAttribute('role', 'status');
announcement.setAttribute('aria-live', 'polite');
announcement.className = 'sr-only';
announcement.textContent = isExpanded ? 'Content collapsed' : 'Content expanded';
document.body.appendChild(announcement);
setTimeout(() => announcement.remove(), 1000);
});
// Respect reduced motion preference
if (window.matchMedia('(prefers-reduced-motion: reduce)').matches) {
document.documentElement.style.setProperty('--transition', 'none');
document.documentElement.style.setProperty('--transition-fast', 'none');
}
// Screen reader only content
const style = document.createElement('style');
style.textContent = '.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }';
document.head.appendChild(style);
</script>
</body>
</html>