flex img

程式語法：

<style>
 
  .row1215 {
  display: flex;
  width: 100%;
  flex-wrap: wrap;
 
}

/* Create two equal columns that sits next to each other */
.column1215 {
  width: 25%;
  margin-bottom: 2px;
 
}

.column1215 img {
  width: 96% !important;
  margin: 0px;
  padding: 0px;
  border: none;
  box-shadow: none;
 
}
 
</style>
<br>
<button onclick="one()">放大</button> 
<button onclick="two()">復原</button>
<br>

<script>
// Get the elements with class="column"
var elements = document.getElementsByClassName("column1215");

// Declare a "loop" variable
var i;

// Full-width images
function one() {
  for (i = 0; i < elements.length; i++) {
    elements[i].style.width = "100%";
  }
}

// Two images side by side
function two() {
  for (i = 0; i < elements.length; i++) {
    elements[i].style.width = "25%";
  }
}


</script>
<br>

<div class="row1215">
  <div class="column1215">
    <img src="https://images.unsplash.com/photo-1638585665789-1d7da9dc7b90?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=870&q=80"></div>
  <div  class="column1215">
    <img src="https://images.unsplash.com/photo-1632226846632-11ca139d5c1a?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwcm9maWxlLXBhZ2V8Nzd8fHxlbnwwfHx8fA%3D%3D&auto=format&fit=crop&w=500&q=60"></div>
  <div  class="column1215">
    <img src="https://images.unsplash.com/photo-1627371735986-e12bec3360ec?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=870&q=80"></div>
  <div  class="column1215">
     <img src="https://images.unsplash.com/photo-1622865313564-d985bc4a295d?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwcm9maWxlLXBhZ2V8MjgwfHx8ZW58MHx8fHw%3D&auto=format&fit=crop&w=500&q=60"></div>
  <div  class="column1215">
    <img src="https://images.unsplash.com/photo-1619185750583-2acbf4952dce?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwcm9maWxlLXBhZ2V8MzIyfHx8ZW58MHx8fHw%3D&auto=format&fit=crop&w=500&q=60"></div>
 
   <div  class="column1215">
    <img src="https://images.unsplash.com/photo-1618234461622-ae3bc0aed2cf?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwcm9maWxlLXBhZ2V8MzY3fHx8ZW58MHx8fHw%3D&auto=format&fit=crop&w=500&q=60"></div>
 
  <div  class="column1215">
    <img src="https://images.unsplash.com/photo-1617879460473-1f8c8dccd7fe?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=870&q=80"></div>
 
  <div  class="column1215">
    <img src="https://images.unsplash.com/photo-1617447639585-c1385c3358ed?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=870&q=80"></div>
 
 
</div>

modal for img

×

請click照片。

程式碼：

<style>
 /* Style the Image Used to Trigger the Modal */
.myImg {
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s;
}

.myImg:hover {opacity: 0.7;}

/* The Modal (background) */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  padding-top: 100px; /* Location of the box */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
  text-align: center;
}

/* Modal Content (Image) */
.modal-content {
 

  width: 80%;
  max-width: 700px;
}

/* Caption of Modal Image (Image Text) - Same Width as the Image */
#caption {
  margin: auto;
  display: block;
  width: 80%;
  max-width: 700px;
  text-align: center;
  color: #ccc;
  padding: 10px 0;
  height: 150px;
}

/* Add Animation - Zoom in the Modal */
.modal-content, #caption {
  animation-name: zoom;
  animation-duration: 0.6s;
}

@keyframes zoom {
  from {transform:scale(0)}
  to {transform:scale(1)}
}

/* The Close Button */
.close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  transition: 0.3s;
}

.close:hover,
.close:focus {
  color: #bbb;
  text-decoration: none;
  cursor: pointer;
}

/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
  .modal-content {
    width: 100%;
  }
}
</style>

<!--The Modal-->
<div class="modal" id="myModal">

  <!--The Close Button-->
  <span class="close">×</span>

  <!--Modal Content (The Image)-->
  <img class="modal-content" id="img01" />

  <!--Modal Caption (Image Text)-->
  <div id="caption"></div>
</div>

 <!--Trigger the Modal-->
請click照片。<br>
<br>
<img alt="Snow" class="myImg"  src="https://images.unsplash.com/photo-1639917902006-0c38f02472cd?ixlib=rb-1.2.1&amp;ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&amp;auto=format&amp;fit=crop&amp;w=1170&amp;q=80" style="max-width: 300px; width: 40%;" />
<img alt="Snow2" class="myImg"  src="https://images.unsplash.com/photo-1639911372921-3a0255a56682?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwcm9maWxlLXBhZ2V8Mnx8fGVufDB8fHx8&auto=format&fit=crop&w=500&q=60" style="max-width: 300px; width: 40%;" />




<script>
// Get the modal
 var modal = document.getElementById("myModal");

// Get the image and insert it inside the modal - use its "alt" text as a caption
var img = document.getElementsByClassName("myImg");
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");

var imgn = img.length;

for(var i = 0; i < imgn; i ++) {
img[i].onclick = function(){
  modal.style.display = "block";
  modalImg.src = this.src;
  captionText.innerHTML = this.alt;
}
}
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on <span> (x), close the modal
span.onclick = function() {
  modal.style.display = "none";
}
 
</script>