Css hide background images with

Forums

Unfortunately the script switches background images but the sprites which are linked to from the html stay on top and are not replaced. I need to find a way to replace the existing images or hide them.

Is there some JS that I can add to the script to tell it to randomly hide the sprites e.g. artcontainer = ‘hide’

What do you mean by “randomly” hide?
You could go:
artcontainer.style.display = ‘none’; I’m not exactly sure what the problem is – Perhaps I’m reading it incorrectly. Also are you intentionally trying to avoid jQuery? (I’m asking because my javascript capabilities are embarrassing lol)

I am assuming that the ‘art-boxes’ contains thumbnailed versions of the random backgrounds? When the page loads, choose a random background, and hide it from the list of other backgrounds? A kind of reverse gallery selection? Again I’m with @jamy_za and although I understand your script, if it was written in jQuery it would seem to read more semantically.

artcontainer.style.display = 'none'; 
// vs 
$('#artcontainer').hide(); 

I also find it easier to draft out ideas – even if the script itself is not valid (I would have at least broken the procedure down!):

$('#header').css('background-image', picture-url); //'picture-url' being the result of the math; 
$('#artcontainer a[href="'+ picture-url'"]).hide(); //Find the link to the same image, and hide it; 

The code hasn’t been tested, so may not work – but even then you can see the method I was aiming for?

 $(document).ready(function() var rows = 3; 
var cols = 4; 
var arr = new Array(); 
function get_class() var r = Math.ceil(Math.random()* rows); 
var c = Math.ceil(Math.random()* cols); 
var cssclass = 'row'+r+'-'+c; 
if($.inArray(cssclass, arr) < 0)arr.push(cssclass); 
return cssclass; 
> else return get_class(); 
> 
> 
$('#art-boxes a').each(function(i,e) $(this).removeClass($(this).attr('class').match(/rowd-d/gi)); 
$(this).addClass(get_class()); 
>); 
>);

So, you want the five background images to alternate in front of the boxes, while this happens the boxes will not be visible. Then, after the five images, the boxes show up. Is that right? Now, if you want the background images to show in front of the boxes you will have to actually put them as an image in front of the boxes with absolute positioning and a higher z-index(all this with css). then have a function change the image in front of the boxes in an interval that you specify like setInterval(). Also, when the function runs through all the images, just place an empty source and nothing will show up, therefore leting the person see the blocks… Sorry if it doesn’t make sense, but I wrote this in a real big rush.. Hope this helps…

 
var randnum = Math.floor(Math.random() * numPics); 
var chosenPic = pictures[randnum]; 

Well i should read it twice after writing code without testing it or: copy/pasting is bad 😛
There is no element with the id of ‘header’ in your dom..
Change also:

var header = document.getElementById('contentright');

Источник

How to Remove Background Image in CSS

As we know, the background image is manipulated with the CSS background-image property, which can specify one or more images for an element. However, there are cases, when we don’t want a background image and want to remove it. This is quite easy.

In our tutorial, we’ll show how the background image can be removed using a few steps.

Create HTML

h2>Example h2> div> div> div id="no-background"> div> div> div>

Add CSS

First, add style to the first and last elements.

• Set the height and width of the .
• Specify the margin-bottom, background-color, and border properties.
• Use the background-image property with the «url» value.
• Set the background-repeat to «no-repeat».
• Add background-size.

div < height: 170px; width: 300px; margin-bottom: 20px; background-color: #CDCDCD; border: 2px solid #CDCDCD; background-image: url('https://images.unsplash.com/photo-1507919909716-c8262e491cde?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=500&q=60'); background-repeat: no-repeat; background-size: 100%; >

Now, we can style the with the «id» named «no-background» and remove the background image of only this element.

div#no-background < background-image: none; >

Let’s see the result of our code.

Example of removing the background image:

html> html> head> title>The title of the document title> style> div < height: 170px; width: 300px; margin-bottom: 20px; background-color: #CDCDCD; border: 2px solid #CDCDCD; background-image: url('https://images.unsplash.com/photo-1507919909716-c8262e491cde?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=500&q=60'); background-repeat: no-repeat; background-size: 100%; > div#no-background < background-image: none; > style> head> body> h2>Example h2> div> div> div id="no-background"> div> div> div> body> html>

So, we demonstrated an example where we used three elements but removed the background image of only one .

Источник

Remove background from Image using CSS only

In this beginner-friendly blog post, we will learn how to remove the background from an image using only CSS, specifically the mix-blend-mode property. This technique is useful for creating interesting visual effects and improving the performance of your website by reducing the need for edited images.

Why this trick is important?

When you download a .png file, you might expect it to have a transparent background. However, this is not always the case. Sometimes, a .png file might have a solid background color, such as white or black. In such cases, you can use the mix-blend-mode property to remove the solid background color and create the appearance of a transparent background.

What is mix-blend-mode?

mix-blend-mode is a CSS property that defines how the content of an element should blend with the content of the element’s parent and its background. With this, you can create nice blends and colors for parts of an element’s content depending on its direct background Checkout this article To remove the background from an image, we will use the mix-blend-mode property with the value multiply. This value will remove the whiter parts of the image. Here’s an example: Image inside div:
Image inside div with mix-blend-multiply:
Similarly out can write this with TailwindCSS In this tutorial, we learned how to remove the background from an image using only CSS and the mix-blend-mode property. This technique allows for greater design flexibility, improved performance, and better SEO benefits compared to using edited images. With this knowledge, you can create interesting visual effects on your website and improve the overall user experience.

Источник

CSS hide a background image during transition with CSS3

The following tutorial shows you how to use CSS to do «CSS hide a background image during transition with CSS3».

CSS Style

The CSS style to do «CSS hide a background image during transition with CSS3» is

ul li < margin-bottom:10px; list-style-type:none; > label !-- w w w . d em o 2 s .c o m--> width:100px; display:inline-block; text-align:right; > input < width:200px; border:1px solid black; border-bottom-right-radius:5px; border-top-right-radius:5px; white-space:7px; color:black; padding-left:20px; -webkit-transition:width .5s; transition:width .5s; > input:focus < height:30px; color:#060; border-radius:5px; -webkit-box-shadow:1px 0px 3px 6px rgba(0, 0, 96, 0.41); -moz-box-shadow:1px 0px 3px 6px rgba(0, 0, 96, 0.41); box-shadow:1px 0px 3px 6px rgba(0, 0, 96, 0.41); -webkit-box-shadow:inset 1px 0px 3px 6px rgba(0, 0, 96, 0.41); -moz-box-shadow:inset 1px 0px 3px 6px rgba(0, 0, 96, 0.41); box-shadow:inset 1px 0px 3px 6px rgba(0, 0, 96, 0.41); width:250px; > .required < border:1px solid red; background-image:url(http://vignette4.wikia.nocookie.net/fallout/images/9/9e/TNUFG_Red_Star.gif/revision/latest?cb=20090206193556); background-repeat:no-repeat; > .required:focus < background-image:none; >

HTML Body

body> form action="process.php"> h1>Registration ul> li> label for="name">Name: input type="text" id="name" name="name">  li> label for="email">Email: input >"required" type="text" id="email" name="email">  li> label for="pass">Password: input >"required" type="password" id="pass" name="pass">  li> input type="submit" value="Register">     

The following iframe shows the result. You can view the full source code and open it in another tab.

html> head> meta name="viewport" content="width=device-width, initial-scale=1"> style id="compiled-css" type="text/css"> ul li < margin-bottom:10px; list-style-type:none; > label !-- w w w . d e m o2 s . c o m--> width:100px; display:inline-block; text-align:right; > input < width: 200px; border: 1px solid black; border-bottom-right-radius: 5px; border-top-right-radius: 5px; white-space: 7px; color: black; padding-left: 20px; -webkit-transition: width .5s; /* Safari */ transition: width .5s; > input:focus < height: 30px; color:#060; border-radius: 5px; -webkit-box-shadow: 1px 0px 3px 6px rgba(0, 0, 96, 0.41); -moz-box-shadow: 1px 0px 3px 6px rgba(0, 0, 96, 0.41); box-shadow: 1px 0px 3px 6px rgba(0, 0, 96, 0.41); -webkit-box-shadow: inset 1px 0px 3px 6px rgba(0, 0, 96, 0.41); -moz-box-shadow: inset 1px 0px 3px 6px rgba(0, 0, 96, 0.41); box-shadow: inset 1px 0px 3px 6px rgba(0, 0, 96, 0.41); width: 250px; > .required < border: 1px solid red; background-image: url(http://vignette4.wikia.nocookie.net/fallout/images/9/9e/TNUFG_Red_Star.gif/revision/latest?cb=20090206193556); background-repeat: no-repeat; > .required:focus < background-image:none; >  body> form action="process.php"> h1>Registration ul> li> label for="name">Name: input type="text" id="name" name="name">  li> label for="email">Email: input >"required" type="text" id="email" name="email">  li> label for="pass">Password: input >"required" type="password" id="pass" name="pass">  li> input type="submit" value="Register">      

Related

• CSS apply CSS3 transition to all properties except background-position
• CSS apply transition on background-size property
• CSS fix CSS transition for a background-image on hover
• CSS hide a background image during transition with CSS3
• CSS make background scale from center outwards with CSS transition
• CSS transition background-image with gradient and image
• CSS Is RGBA Background property not supported by CSS3 Transitions

demo2s.com | Email: | Demo Source and Support. All rights reserved.

Источник

How To Remove Background From CSS

The Process of Removing Background Images Using CSS

Many of you know that the background image of a website is controlled by CSS. It has a property called CSS background image. This property helps you set the image to a certain website page. However, it does not mean you have to set a background image even if you do not want to. If you do not want to use any image, you can stop using the property and find your background empty, looking like a blank page.

You can use colour instead of images too. But if you want to remove background image CSS, you must follow some simple steps. But here is something, you need to use an HTML tag first to change anything using CSS because, without HTML, CSS cannot work.

Step 1: To remove background image CSS, first, create an HTML tag using an element. This element is responsible for setting the size of the headers. Usually the element is perfect for headers because the element makes the writing look bigger.

Step 2: Then under tag, enter the tag. This tag is very important because developers use it to manage the lines of their coding. Simply put, if the tag is not properly placed, the website does not look good.