Develop Reference

my right image changes slides but the left one is stuck on the first slide

I have created two changing image galleries side by side but my right image changes slides but the left one is stuck on the first slide. does anyone know why? I have found the code on W3.CSS but I changed the class "changing-photo-right" and "changing-photo-left" to one of my own class (which can be found in my css stylesheet) and did not link the style sheet of W3.css.
.section2 {
background: #F5DAD3;
display: flex;
height: 750px;
position: relative;
}
.changing-photo-left {
float: left;
margin-left: 125px;
margin-top: -390px;
position: relative;
display: block;
}
.changing-photo-right {
float: right;
margin-right: 125px;
margin-top: -390px;
position: relative;
display: block;
}
.section3 {
height: 440px;
width: 2px;
top: 160px;
left: 50%;
position: absolute;
border: 0px solid black;
background-color: black;
border-radius: 20px;
}
<div class="hmm">
<div class="section2"></div>
<div class="section3" ></div>
<div>
<p class="text-12">The interieur</p>
<p class="text-11">Discover the lovely interieur that was built since 1948.</p>
<a class="button-intro-below-left" href="">Click here for more</a>
<div class="changing-photo-left" style="max-width:500px">
<img class="mySlides" src="009.jpg" style="width:100%">
<img class="mySlides" src="062.jpg" style="width:100%">
<img class="mySlides" src="027.jpg" style="width:100%">
</div>
<script>
var myIndex = 0;
carousel();
function carousel() {
var i;
var x = document.getElementsByClassName("mySlides");
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
myIndex++;
if (myIndex > x.length) {myIndex = 1}
x[myIndex-1].style.display = "block";
setTimeout(carousel, 2500); // Change image every 3 seconds
}
</script>
</div>
<div>
<p class="text-13">The exterior</p>
<p class="text-14">Discover the lovely exterior that was built since 1948.</p>
<a class="button-intro-below-right" href="">Click here for more</a>
<div class="changing-photo-right" style="max-width:500px">
<img class="mySlides1" src="009.jpg" style="width:100%">
<img class="mySlides1" src="012.jpg" style="width:100%">
<img class="mySlides1" src="013.jpg" style="width:100%">
</div>
<script>
var myIndex = 0;
carousel();
function carousel() {
var i;
var x = document.getElementsByClassName("mySlides1");
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
myIndex++;
if (myIndex > x.length) {myIndex = 1}
x[myIndex-1].style.display = "block";
setTimeout(carousel, 2500); // Change image every 3 seconds
}
</script>
</div>

You're using the same names for the variables and functions in both of the loops. If you change the names of the variables and functions in the second loop, everything should work just fine.
.section2 {
background: #F5DAD3;
display: flex;
height: 750px;
position: relative;
}
.changing-photo-left {
float: left;
margin-left: 125px;
margin-top: -390px;
position: relative;
display: block;
}
.changing-photo-right {
float: right;
margin-right: 125px;
margin-top: -390px;
position: relative;
display: block;
}
.section3 {
height: 440px;
width: 2px;
top: 160px;
left: 50%;
position: absolute;
border: 0px solid black;
background-color: black;
border-radius: 20px;
}
<div class="hmm">
<div class="section2"></div>
<div class="section3" ></div>
<div>
<p class="text-12">The interieur</p>
<p class="text-11">Discover the lovely interieur that was built since 1948.</p>
<a class="button-intro-below-left" href="">Click here for more</a>
<div class="changing-photo-left" style="max-width:500px">
<img class="mySlides" src="https://images.unsplash.com/photo-1672426142068-c2103a852426?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxlZGl0b3JpYWwtZmVlZHwzfHx8ZW58MHx8fHw%3D&w=1000&q=80" style="width:100%">
<img class="mySlides" src="https://media.istockphoto.com/id/1409254639/photo/autumn-drive.jpg?b=1&s=170667a&w=0&k=20&c=phQOICvfLifPWESZu3AioY7sKM9s_HQnCozMKF6g120=" style="width:100%">
<img class="mySlides" src="https://media.istockphoto.com/id/1427249962/photo/tropical-leaves-abstract-green-leaf-texture-in-garden-nature-background.jpg?b=1&s=170667a&w=0&k=20&c=40KcV7mbAQWihuO0At8GSOTIKp-TvIoHGIhurHBeUq0=" style="width:100%">
</div>
<script>
var myIndex = 0;
carousel();
function carousel() {
var i;
var x = document.getElementsByClassName("mySlides");
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
myIndex++;
if (myIndex > x.length) {myIndex = 1}
x[myIndex-1].style.display = "block";
setTimeout(carousel, 2500); // Change image every 3 seconds
}
</script>
</div>
<div>
<p class="text-13">The exterior</p>
<p class="text-14">Discover the lovely exterior that was built since 1948.</p>
<a class="button-intro-below-right" href="">Click here for more</a>
<div class="changing-photo-right" style="max-width:500px">
<img class="mySlides1" src="https://images.unsplash.com/photo-1672426142068-c2103a852426?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxlZGl0b3JpYWwtZmVlZHwzfHx8ZW58MHx8fHw%3D&w=1000&q=80" style="width:100%">
<img class="mySlides1" src="https://media.istockphoto.com/id/1409254639/photo/autumn-drive.jpg?b=1&s=170667a&w=0&k=20&c=phQOICvfLifPWESZu3AioY7sKM9s_HQnCozMKF6g120=" style="width:100%">
<img class="mySlides1" src="https://media.istockphoto.com/id/1427249962/photo/tropical-leaves-abstract-green-leaf-texture-in-garden-nature-background.jpg?b=1&s=170667a&w=0&k=20&c=40KcV7mbAQWihuO0At8GSOTIKp-TvIoHGIhurHBeUq0=" style="width:100%">
</div>
<script>
var myIndex1 = 0;
carousel1();
function carousel1() {
var j;
var y = document.getElementsByClassName("mySlides1");
for (j = 0; j < y.length; j++) {
y[j].style.display = "none";
}
myIndex1++;
if (myIndex1 > y.length) {myIndex1 = 1}
y[myIndex1-1].style.display = "block";
setTimeout(carousel1, 2500); // Change image every 3 seconds
}
</script>
</div>

How can i close the modal pop up window by clicking escape button using js

I have made a modal box popup functionality. I want to close the modal popup window when the escape button is pressed. I've tried all the logic but couldn't do it. Please help have to do it. I know it is simple I'm new to js. Coudn't do it using js
Please see the 'run code snippet' by clicking on the full page view!
function openModal() {
document.getElementById("myModal").style.display = "block";
}
function closeModal() {
document.getElementById("myModal").style.display = "none";
}
var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
showSlides(slideIndex += n);
}
function currentSlide(n) {
showSlides(slideIndex = n);
}
function showSlides(n) {
var i;
var slides = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("demo");
var captionText = document.getElementById("caption");
if (n > slides.length) {
slideIndex = 1
}
if (n < 1) {
slideIndex = slides.length
}
for (var i = 0; i < slides.length; i++) {
slides[i].style.display = "none";
}
for (var i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" active", "");
}
if (slideIndex == 1) {
document.getElementById("next1").hidden = false;
} else {
document.getElementById("next1").hidden = true;
}
if (slideIndex == (slides.length)) {
document.getElementById("prev1").hidden = false;
} else {
document.getElementById("prev1").hidden = true;
}
slides[slideIndex - 1].style.display = "block";
dots[slideIndex - 1].className += " active";
captionText.innerHTML = this.alt;
}
.modal {
width: 58%;
height: 100%;
top: 0;
position: fixed;
display: none;
background-color: rgba(22, 22, 22, 0.5);
margin-left: 300px;
max-width: 779px;
min-width: 779px;
}
.modal-content {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
}
<tr>
<div class="row">
<div class="column">
<td>
<p align="center"><img src="https://source.unsplash.com/user/erondu/1600x900" width="250" height="164"
onclick="openModal();currentSlide(1)" class="hover-shadow cursor"></p>
</td>
</div>
<div id="myModal" class="modal modal-visible">
<div class="modal-content">
<span class="close cursor" onclick="closeModal()">×</span>
<div class="mySlides">
<img src="https://source.unsplash.com/user/erondu/1600x900" style="width: 98%;
position: relative;
left: 10px;
top: 109px;">
</div>
<div class="mySlides">
<img src="https://source.unsplash.com/collection/190727/1600x900" style="width: 98%;
position: relative;
left: 10px;
top: 109px;">
</div>
<a class="prev" id="prev1" onclick="plusSlides(-1)">❮</a>
<a class="next" id="next1" onclick="plusSlides(1)">❯</a>
<div style="width: 100%; text-align: center;">
<span id="result"></span>
</div>

Problems with my slide gallery

I have a few problems with the sliding gallery I added:
the buttons stuck below the gallery instead of its sides. (I tried to give them 'display: inline-block' (?)).
I want to divide the #gallrey div into 2. Which contain the #slideGallery & #galleryDescription. The div #galleryDescription contains <p> that is stuck at the bottom instead of top or center.
This is the format I want #gallery to have:
[button left][#slideGallery DIV][button right][#galleryDescription DIV]
Hope you understand me. :)
Here is my code:
var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
showDivs(slideIndex += n);
}
function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
if (n > x.length) {
slideIndex = 1
}
if (n < 1) {
slideIndex = x.length
}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
x[slideIndex - 1].style.display = "block";
}
.mySlides {
height: 300px;
width: 300px;
}
#gallery {
width: 620px;
border: 1px solid black;
margin: 0 auto;
}
#gallerySlide {
display: inline-block;
width: 49%;
top: 0;
left: 0;
}
#galleryDescription {
display: inline-block;
width: 49%;
top: 0;
right: 0;
}
#glryDesc {
/* (glryDesc = gallery description) */
padding-left: 5px;
width: 90%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="gallery">
<div id="gallerySlide">
<img class="mySlides" src="images/slide1.png" />
<img class="mySlides" src="images/slide2.png" />
<img class="mySlides" src="images/slide3.jpg" />
<img class="mySlides" src="images/slide4.jpg" />
<button class="btn" onclick="plusDivs(-1)">❮</button>
<button class="btn" onclick="plusDivs(1)">❯</button>
</div>
<div id="galleryDescription">
<p id="glryDesc">This is gonna be the description of the slide gallery. The gallery is very nice. Also the description !</p>
</div>
</div>

Is this what you wanted?
You had way too many widths that were contradicting with each other. I had to compromise a little on the different sizes. Try adjusting them yourself.
left, top and right are properties do not work on elements that do not have a specific position set (relative, absolute or fixed). Default position is static.
I used flex containers and justify-content, align-items to align the items accordingly. Read up on them.
var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
showDivs(slideIndex += n);
}
function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
if (n > x.length) {slideIndex = 1}
if (n < 1) {slideIndex = x.length}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
x[slideIndex-1].style.display = "block";
}
.mySlides {
height: 280px;
width: 280px;
display: none;
}
#gallery{
display: flex;
justify-content: center;
align-items: center;
width: 660px;
border: 1px solid black;
margin:0 auto;
}
#gallerySlide {
display: flex;
width: 49%;
}
#glryDesc { /* (glryDesc = gallery description) */
padding-left: 5px;
}
<div id="gallery">
<div id="gallerySlide">
<button class="btn" onclick="plusDivs(-1)">❮</button>
<img class="mySlides" src="images/slide1.png" />
<img class="mySlides" src="images/slide2.png" />
<img class="mySlides" src="images/slide3.jpg" />
<img class="mySlides" src="images/slide4.jpg" />
<button class="btn" onclick="plusDivs(1)">❯</button>
</div>
<div id="galleryDescription">
<p id="glryDesc">This is gonna be the description of the slide gallery. The gallery is very nice. Also the description !</p>
</div>
</div>

CSS image gallery - responsive center aligning

I have been building a CSS gallery with JavaScript controls, I'm using both portrait and landscape pictures. I can get them to align in the centre of the main page <div> I have grouped the image and the controls in a smaller container however I can't get both types of image to be centered both along both axis within that container.
Below is my first effort at a jsfiddle, please take a look all advice including redirects to similar questions that I may have missed are welcome.
html
<div class="image-wrap">
<div id="pic-gallery">
<div class="gal-butt">
<a onclick="plusDivs(-1)">❮</a>
</div>
<div class="pic_ver">
<a target="_blank" href="images/katie_Holding.gif">
<img class="mySlides" src="images/katie_Holding.gif" border="1" alt="" width="200" height="300">
</a>
</div>
<div class="pic_hor">
<a target="_blank" href="images/Mindees_1.gif">
<img class="mySlides" src="images/Mindees_1.gif" border="1" alt="" width="300" height="200">
</a>
</div>
<div class="pic_hor">
<a target="_blank" href="images/Mindees_2.gif">
<img class="mySlides" src="images/Mindees_2.gif" border="1" alt="" width="300" height="200">
</a>
</div>
<div class="pic_hor">
<a target="_blank" href="images/Mindees_3.gif">
<img class="mySlides" src="images/Mindees_3.gif" border="1" alt="" width="300" height="200">
</a>
</div>
<div class="gal-butt">
<a onclick="plusDivs(-1)">❯</a>
</div>
</div>
</div>
CSS
#pic-gallery {
margin-left: 330px;
width: 400px;
height: 400px;
border: 1px solid black;
align-items: center;
display: flex;
}
.image-wrapper {
margin: auto;
align-items: center;
justify-content: center;
}
.gal-butt {
font-size: 2.5em;
}
#pic-ver {
padding-top: 50px;
padding-right: 0px;
padding-bottom: 0px;
padding-left: 100px;
}
#pic-hor {
padding-top: 100px;
padding-right: 0px;
padding-bottom: 0px;
padding-left: 50px;
}
JS
var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
showDivs(slideIndex += n);
}
function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
if (n > x.length) {
slideIndex = 1
}
if (n < 1) {
slideIndex = x.length
}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
x[slideIndex - 1].style.display = "block";
}
https://jsfiddle.net/bb85rqpe/1/

Add margin: auto to .gal-butt to center that element horizontally. Here is a good resource on centering things https://www.w3.org/Style/Examples/007/center.en.html
#pic-gallery {
margin-left: 330px;
width: 400px;
height: 400px;
border: 1px solid black;
align-items: center;
display: flex;
}
.image-wrapper {
margin: auto;
align-items: center;
justify-content: center;
}
.gal-butt {
font-size: 2.5em;
margin: auto;
}
#pic-ver {
padding-top: 50px;
padding-right: 0px;
padding-bottom: 0px;
padding-left: 100px;
}
#pic-hor {
padding-top: 100px;
padding-right: 0px;
padding-bottom: 0px;
padding-left: 50px;
}
<div class="image-wrap">
<div id="pic-gallery">
<div class="gal-butt">
<a onclick="plusDivs(-1)">❮</a>
</div>
<div class="pic_ver">
<a target="_blank" href="images/katie_Holding.gif">
<img class="mySlides" src="images/katie_Holding.gif" border="1" alt="" width="200" height="300">
</a>
</div>
<div class="pic_hor">
<a target="_blank" href="images/Mindees_1.gif">
<img class="mySlides" src="images/Mindees_1.gif" border="1" alt="" width="300" height="200">
</a>
</div>
<div class="pic_hor">
<a target="_blank" href="images/Mindees_2.gif">
<img class="mySlides" src="images/Mindees_2.gif" border="1" alt="" width="300" height="200">
</a>
</div>
<div class="pic_hor">
<a target="_blank" href="images/Mindees_3.gif">
<img class="mySlides" src="images/Mindees_3.gif" border="1" alt="Katie holding Mindee" width="300" height="200">
</a>
</div>
<div class="gal-butt">
<a onclick="plusDivs(-1)">❯</a>
</div>
</div>
</div>
<script>
var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
showDivs(slideIndex += n);
}
function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
if (n > x.length) {
slideIndex = 1
}
if (n < 1) {
slideIndex = x.length
}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
x[slideIndex - 1].style.display = "block";
}
</script>

I'm trying to make a slideshow with the same title

I want to put more images to that code in order to make it a slideshow, but keeping the h1 and h2 tags there, even when the images are sliding
Here is the code I have which properly shows the image with the titles on top of it:
HTML:
<header class="header-image">
<div class="headline">
<div class="title">
<h1>SanDesigns</h1>
<h2>The RENDERS you are looking for</h2>
</div>
</div>
</header>
CSS:
.header-image {
display:block;
width:100%;
background:url(Matthias_Leuzinger_test_Test_exterior_BB_View01_.jpg) no-repeat;
min-height:605px;
margin-top:-1px;
}
.title {
padding-left: 15%;
padding-top:5%;
font-family:GeosansLight;
}
.title h1 {
width: 18.75%;
border:3px solid #FFFFFF;
background-color:#7A7A7A;
text-align:center;
color:#FFF7F7;
}
.title h2 {
border:3px solid #FFFFFF;
background-color:#7A7A7A;
text-align:center;
width:30%;
color:#FFF7F7;
}
Ok, there is this other code that in which I was able to do the slideshow, but in this one I can put the divs with the h1 and h2 tags:
<nav class="navbar">
<ul>
<li>Inicio</li>
<li>Diseños</li>
<li>Articulos</li>
<li>Equipo</li>
<li>Contacto</li>
</ul>
</nav>
<header class="slideshow">
<img class="header-image" src="Architectural-Photorealistic-3D-Renders.jpg">
<img class="header-image" src="Channel-Place-Residence_LA.jpg">
<img class="header-image" src="Matthias_Leuzinger_test_Test_exterior_BB_View01_.jpg">
<img class="header-image" src="p2010018-20110510-view1-modepark.jpg">
</header>
And the script:
<script>
var slideIndex = 0;
carousel();
function carousel() {
var i;
var x = document.getElementsByClassName("header-image");
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
slideIndex++;
if (slideIndex > x.length) {slideIndex = 1}
x[slideIndex-1].style.display = "block";
setTimeout(carousel, 6000); // Change image every 6 seconds
}

<script>
var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
showDivs(slideIndex += n);
}
function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
if (n > x.length) {slideIndex = 1}
if (n < 1) {slideIndex = x.length}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
x[slideIndex-1].style.display = "block";
}
</script>
<h2 class="w3-center">Manual Slideshow</h2>
<div class="w3-content" style="max-width:800px;position:relative">
<img class="mySlides" src="img_fjords.jpg" style="width:100%">
<img class="mySlides" src="img_lights.jpg" style="width:100%">
<img class="mySlides" src="img_mountains.jpg" style="width:100%">
<img class="mySlides" src="img_forest.jpg" style="width:100%">
<a class="w3-btn-floating" style="position:absolute;top:45%;left:0" onclick="plusDivs(-1)">❮</a>
<a class="w3-btn-floating" style="position:absolute;top:45%;right:0" onclick="plusDivs(1)">❯</a>
</div>
Please check this link:-http://www.w3schools.com/w3css/tryit.asp?filename=tryw3css_slideshow_self

Simply use a javascript that change your background, but you need to add an id to your header div:
HTML
<header class="header-image" id="changingHeader">
<div class="headline">
<div class="title">
<h1>SanDesigns</h1>
<h2>The RENDERS you are looking for</h2>
</div>
</div>
</header>
JAVASCRIPT
<script language="javascript">
var currentImg = 1;
function changeBg(imgNumber){
var images = ['img1.jpg','img2.jpg','img3.jpg','img4.jpg','img5.jpg']
document.getElementById('changingHeader').style.backgroundImage = "url("+images[imgNumber]+")";
if (currentImg <= 3){
currentImg ++;
}else{
currentImg = 0;
}
}
setInterval(function(){
changeBg(currentImg);
}, 5000); // this will run every 5 seconds
</script>
CSS
.header-image {
display:block;
width:100%;
background:url(img1.jpg) no-repeat;
min-height:605px;
margin-top:-1px;
}
.title {
padding-left: 15%;
padding-top:5%;
font-family:GeosansLight;
}
.title h1 {
width: 18.75%;
border:3px solid #FFFFFF;
background-color:#7A7A7A;
text-align:center;
color:#FFF7F7;
}
.title h2 {
border:3px solid #FFFFFF;
background-color:#7A7A7A;
text-align:center;
width:30%;
color:#FFF7F7;
}