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<!DOCTYPE html>
<html>
<head>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
</head>
<body>
<div class="w3-container">
<h2>W3.CSS 燈箱</h2>
<p>在此示例中，我們結合了幻燈片和模態中的JavaScript來建立燈箱（模態畫廊）：</p>
<div class="w3-row-padding" style="margin:0 -16px">
<div class="w3-col s4">
<img src="https://www.w3schools.com/w3css/img_nature_wide.jpg" style="width:100%;cursor:pointer"
onclick="openModal();currentDiv(1)" class="w3-hover-shadow">
</div>
<div class="w3-col s4">
<img src="https://www.w3schools.com/w3css/img_snow_wide.jpg" style="width:100%;cursor:pointer"
onclick="openModal();currentDiv(2)" class="w3-hover-shadow">
</div>
<div class="w3-col s4">
<img src="https://www.w3schools.com/w3css/img_mountains_wide.jpg" style="width:100%;cursor:pointer"
onclick="openModal();currentDiv(3)" class="w3-hover-shadow">
</div>
</div>
<div id="myModal" class="w3-modal w3-black">
<span class="w3-text-white w3-xxlarge w3-hover-text-grey w3-container w3-display-topright" onclick="closeModal()" style="cursor:pointer">×</span>
<div class="w3-modal-content">
<div class="w3-content" style="max-width:1200px">
<img class="mySlides" src="https://www.w3schools.com/w3css/img_nature_wide.jpg" style="width:100%">
<img class="mySlides" src="https://www.w3schools.com/w3css/img_snow_wide.jpg" style="width:100%">
<img class="mySlides" src="https://www.w3schools.com/w3css/img_mountains_wide.jpg" style="width:100%">
<div class="w3-row w3-black w3-center">
<div class="w3-display-container">
<p id="caption"></p>
<span class="w3-display-left w3-btn" onclick="plusDivs(-1)">❮</span>
<span class="w3-display-right w3-btn" onclick="plusDivs(1)">❯</span>
</div>
<div class="w3-col s4">
<img class="demo w3-opacity w3-hover-opacity-off" src="https://www.w3schools.com/w3css/img_nature_wide.jpg" style="width:100%" onclick="currentDiv(1)" alt="Nature and sunrise">
</div>
<div class="w3-col s4">
<img class="demo w3-opacity w3-hover-opacity-off" src="https://www.w3schools.com/w3css/img_snow_wide.jpg" style="width:100%" onclick="currentDiv(2)" alt="French Alps">
</div>
<div class="w3-col s4">
<img class="demo w3-opacity w3-hover-opacity-off" src="https://www.w3schools.com/w3css/img_mountains_wide.jpg" style="width:100%" onclick="currentDiv(3)" alt="Mountains and fjords">
</div>
</div>
</div>
</div>
</div>
</div>
<script>
function openModal() {
document.getElementById('myModal').style.display = "block";
}
function closeModal() {
document.getElementById('myModal').style.display = "none";
}
var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
showDivs(slideIndex += n);
}
function currentDiv(n) {
showDivs(slideIndex = n);
}
function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("demo");
var captionText = document.getElementById("caption");
if (n > x.length) {slideIndex = 1}
if (n < 1) {slideIndex = x.length}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
for (i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" w3-opacity-off", "");
}
x[slideIndex-1].style.display = "block";
dots[slideIndex-1].className += " w3-opacity-off";
captionText.innerHTML = dots[slideIndex-1].alt;
}
</script>
</body>
</html>