Transition effects applied to images with transparency using CSS

My collection includes three transparent PNG images:

https://i.sstatic.net/80Jxj.png

https://i.sstatic.net/Eewcq.png

https://i.sstatic.net/VXk7A.png

I have arranged them using the following HTML/CSS:

<div style="position: relative; left: 0; top: 0;">
    <img src="img/main.png" style="position: absolute; top: 0; left: 0;" />
    <img src="img/middle.png" style="position: absolute; top: 0; left: 0;"/>
    <img src="img/center.png" style="position: absolute; top: 0; left: 0;"/>
</div>

This arrangement results in:

https://i.sstatic.net/igHhy.png

Now, I would like to add a hover effect to each of these images (such as zooming in, adding borders, changing opacity, etc).

The standard CSS for zooming in on hover is:

img {
    -webkit-transition: all 1s ease; /* Safari and Chrome */
    -moz-transition: all 1s ease; /* Firefox */
    -ms-transition: all 1s ease; /* IE 9 */
    -o-transition: all 1s ease; /* Opera */
    transition: all 1s ease;
}

img:hover {
    -webkit-transform:scale(1.25); /* Safari and Chrome */
    -moz-transform:scale(1.25); /* Firefox */
    -ms-transform:scale(1.25); /* IE 9 */
    -o-transform:scale(1.25); /* Opera */
     transform:scale(1.25);
}

However, this does not work well with my setup since the hover effect applies to the entire image instead of just the image content (due to transparent backgrounds).

My question is whether it's possible to apply CSS styles to irregularly shaped transparent images?

View my jsfiddle here: http://jsfiddle.net/h4mxysw5/

Edit:

There seems to be confusion. I do not wish to zoom all three images simultaneously.

For instance, when hovering over the center image, only that specific image should zoom (not all three).

Check out the updated version on jsfiddle with added borders: http://jsfiddle.net/h4mxysw5/4/

javascriptjqueryhtmlcss

Answer №1

There are two key tasks you must complete.

  • Ensure your images are cropped to fit only the necessary space, not the entire container size, to avoid overlapping.
  • Delete the :hover from the div and apply a :hover effect to each image using the img selector.

For example:

div {
    margin: 50px; /* Just for demonstration */
}

img {
    -webkit-transition: all 1s ease; /* Safari and Chrome */
    -moz-transition: all 1s ease; /* Firefox */
    -ms-transition: all 1s ease; /* IE 9 */
    -o-transition: all 1s ease; /* Opera */
    transition: all 1s ease;
}

img:hover {
    -webkit-transform:scale(1.25); /* Safari and Chrome */
    -moz-transform:scale(1.25); /* Firefox */
    -ms-transform:scale(1.25); /* IE 9 */
    -o-transform:scale(1.25); /* Opera */
     transform:scale(1.25);
}
<div style="position: relative; left: 0; top: 0;">
    <img class="one" src="https://i.sstatic.net/bFfbC.png" style="position: absolute; top: 0; left: 0;" />
    <img class="two" src="http://i.imgur.com/iEwbExs.png" style="position: absolute; top: 76px; left: 72px;"/>
    <img class="three" src="http://i.imgur.com/hdwFlUv.png" style="position: absolute; top: 102px; left: 100px;"/>
</div>

Update

Explore what can be achieved with SVGs:

path {
    -webkit-transition: all 1s ease; /* Safari and Chrome */
    -moz-transition: all 1s ease; /* Firefox */
    -ms-transition: all 1s ease; /* IE 9 */
    -o-transition: all 1s ease; /* Opera */
    transition: all 1s ease;
    transform-origin: center center;
}

path:hover {
    -webkit-transform:scale(1.25); /* Safari and Chrome */
    -moz-transform:scale(1.25); /* Firefox */
    -ms-transform:scale(1.25); /* IE 9 */
    -o-transform:scale(1.25); /* Opera */
     transform:scale(1.25);
}
<svg width="400px" height="400px">
    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <path d="M140.5,178 C161.210678,178 178,161.210678 178,140.5 C178,119.789322 161.210678,103 140.5,103 C119.789322,103 103,119.789322 103,140.5 C103,161.210678 119.789322,178 140.5,178 Z M141,158 C150.388841,158 158,150.388841 158,141 C158,131.611159 150.388841,124 141,124 C131.611159,124 124,131.611159 124,141 C124,150.388841 131.611159,158 141,158 Z" fill="#4BA1DF"></path>
            <path d="M140,205 C175.898509,205 205,175.898509 205,140 C205,104.101491 175.898509,75 140,75 C104.101491,75 75,104.101491 75,140 C75,175.898509 104.101491,205 140,205 Z M140,189 C167.061953,189 189,167.061953 189,140 C189,112.938047 167.061953,91 140,91 C112.938047,91 91,112.938047 91,140 C91,167.061953 112.938047,189 140,189 Z" fill="#4BA1DF"></path>
            <path d="M140,280 C217.319865,280 280,217.319865 280,140 C280,62.680135 217.319865,0 140,0 C62.680135,0 0,62.680135 0,140 C0,217.319865 62.680135,280 140,280 L140,280 Z M140.5,226 C187.720346,226 226,187.720346 226,140.5 C226,93.2796539 187.720346,55 140.5,55 C93.2796539,55 55,93.2796539 55,140.5 C55,187.720346 93.2796539,226 140.5,226 L140.5,226 Z" fill="#4BA1DF"></path>
    </g>
</svg>

Answer №2

The primary concern presented in this scenario is the uniform size of all images being used, causing them to overlap and only allowing interaction with the topmost image when hovered upon. Despite their transparency, the :hover effect is still triggered across the entire image area. To exhibit an alternative method utilizing custom CSS, consider the following example without images:

div > div {
-webkit-transition: all 1s ease;
-moz-transition: all 1s ease;
-ms-transition: all 1s ease;
-o-transition: all 1s ease;
transition: all 1s ease;
border:10px solid #f00;
border-radius:50%;
position: absolute; 
 }

.outer {
width:200px;
height:200px;
    top: 25px; 
left: 25px;
border:30px solid #f00;
}
.middle {
width:150px;
height:150px;
    top: 60px; 
left: 60px;
border:20px solid #f00;
}
.inner {
width:100px;
height:100px;
top: 95px; 
left: 95px;
border:10px solid #f00;
}

div > div:hover {
-webkit-transform:scale(1.25);
-moz-transform:scale(1.25);
-ms-transform:scale(1.25);
-o-transform:scale(1.25);
 transform:scale(1.25);
}
<div style="position: relative; left: 0; top: 0;">
    <div class="outer"></div><div class="middle"></div><div class="inner"></div>
</div>

To extend this approach while incorporating images as "background-images," slight adjustments can be made to achieve the desired outcome:

div > div {
    -webkit-transition: all 1s ease;
    -moz-transition: all 1s ease;
    -ms-transition: all 1s ease;
    -o-transition: all 1s ease;
    transition: all 1s ease;
    border:1px solid #f00;
    border-radius:50%;
    position: absolute; 
 }

.outer {
    width:280px;
    height:280px;
        top: 25px; 
    left: 25px;
    background-image:url(https://i.sstatic.net/bFfbC.png);
}
.middle {
    width:130px;
    height:130px;
        top: 100px; 
    left: 100px;
    background-image:url(https://i.sstatic.net/Eewcq.png);
    background-position:center;
}
.inner {
    width:75px;
    height:75px;
    top: 125px; 
    left: 125px;
    background-image:url(https://i.sstatic.net/VXk7A.png);
    background-position:center;
}

div > div:hover {
    -webkit-transform:scale(1.25);
    -moz-transform:scale(1.25);
    -ms-transform:scale(1.25);
    -o-transform:scale(1.25);
     transform:scale(1.25);
}
<div style="position: relative; left: 0; top: 0;">
    <div class="outer"></div>
    <div class="middle"></div>
    <div class="inner"></div>
</div>

Answer №3

Out of pure curiosity to test its feasibility, I decided to craft a CSS exclusive rendition. Although it deviates from the OP's image requirement, I believe that showcasing this as an alternative to using img and/or JS is valuable.

Within the code snippet, you'll find both a non-shaded and shaded version. Feel free to share your thoughts...

(by the way: validated in FF DE 44+, Chrome 46+, and IE11+ on W7) 

html, body      { box-sizing: border-box; 
                  height: 100%; width: 100%; background-color: #f9f7f1;
                  margin: 0px; padding: 0px; border: 0px;
                  cursor: default }
*, *:before, 
*:after         { box-sizing: inherit }

.donut-button   { position: relative;
                  width:  280px;
                  height: 280px; 
                  margin: 100px auto;
                  cursor: pointer }

.r-outer        { width: 100%; height: 100%; border-width: 55px; top:  0.0%; left:  0.0% }
.r-middle       { width:  50%; height:  50%; border-width: 15px; top: 25.0%; left: 25.0% }
.r-center       { width:  25%; height:  25%; border-width: 20px; top: 37.5%; left: 37.5% }

.ring           { position: absolute;
                  border-color : hsl(205, 69%, 58%);
                  border-style : solid;
                  border-radius: 50%;
                  transition: all 50ms }

.ring:hover     { transform: scale(1.10) }
.ring:active    { transform: scale(0.95) }


/* demo extras, shadow and color manipulation during hover */
[btn]           { box-shadow: inset    0    0    1px hsla(205, 69%,48%, 1),  /* hide white overflow (quirk) */
                              inset   10px 10px 10px hsla(205, 69%, 8%,.3),  /* inset shadow */
                                       0    0    1px hsla(205, 69%,58%, 1),  /* hide white overflow (ditto) */
                                      20px 20px 10px hsla(205, 69%, 8%,.4),  /* inner outside shadow */
                                       0    0    1px hsla(205, 69%, 8%,.3) } /* outer outside shadow */

[btn]:hover     { border-color: hsl(205, 69%, 62%);
                  box-shadow: inset 10px 10px 10px hsla(205, 69%, 8%,.4),
                                    20px 20px 10px hsla(205, 69%, 8%,.3) }

[btn]:active    { border-color: hsl(205, 69%, 54%);
                  box-shadow: inset  8px  8px  8px hsla(205, 69%, 8%,.5),
                                    10px 10px 10px hsla(205, 69%, 8%,.4) }
    <div id="donut-1" class="donut-button">
        <div class="ring r-outer"></div>
        <div class="ring r-middle"></div>
        <div class="ring r-center"></div>
    </div>

    <div id="donut-2" class="donut-button">
        <div btn class="ring r-outer"></div>
        <div btn class="ring r-middle"></div>
        <div btn class="ring r-center"></div>
    </div>

Answer №4

When using JavaScript, you have the ability to set specific areas for hovering by coding them in this way:

JAVASCRIPT

function animateCircles(obj) {
    var x = window.event.x - obj.offsetLeft;
    var y = window.event.y - obj.offsetTop;
    var img1 = document.getElementById('1');
    var img2 = document.getElementById('2');
    var img3 = document.getElementById('3');

    var centerR = 45;
    var middleR = 75;
    if (x >= img3.offsetLeft + (img3.offsetWidth / 2 - centerR) && 
        x <= img3.offsetLeft + (img3.offsetWidth / 2 + centerR) && 
        y >= img3.offsetTop + (img3.offsetHeight / 2 - centerR) && 
        y <= img3.offsetTop + (img3.offsetHeight / 2 + centerR))
        img3.className += " onhover";
    else
        img3.className = "normal";
        
    if (x >= img2.offsetLeft + (img2.offsetWidth / 2 - middleR) && 
        x <= img2.offsetLeft + (img2.offsetWidth / 2 + middleR) && 
        y >= img2.offsetTop + (img2.offsetHeight / 2 - middleR) && 
        y <= img2.offsetTop + (img2.offsetHeight / 2 + middleR))
        img2.className += " onhover";
    else
        img2.className = "normal";
    
    if (x >= img1.offsetLeft && 
        x <= img1.offsetLeft + img1.offsetWidth && 
        y >= img1.offsetTop && 
        y <= img1.offsetTop + img1.offsetHeight)
        img1.className += " onhover";
    else
        img1.className = "normal";
}

In this code, you define the size of the hover 'squares' with the variables centerR and middleR. You can enhance this code by expanding the hovering area as images increase in size so that the images only shrink when you hover outside of them. By soft-coding image widths and heights, there is greater flexibility for future changes to the pictures.

With the following HTML structure:

<div style="position: relative; left: 0; top: 0;">
    <img id="1" src="https://i.sstatic.net/bFfbC.png" style="position: absolute; top: 0; left: 0;" onmousemove="animateCircles(this)" />
    <img id="2" src="https://i.sstatic.net/Eewcq.png" style="position: absolute; top: 0; left: 0;" onmousemove="animateCircles(this)" />
    <img id="3" src="https://i.sstatic.net/VXk7A.png" style="position: absolute; top: 0; left: 0;" onmousemove="animateCircles(this)" />
</div>

and accompanying CSS:

.normal {
    -webkit-transition: all 1s ease;
    -moz-transition: all 1s ease;
    -ms-transition: all 1s ease;
    -o-transition: all 1s ease;
    transition: all 1s ease;
}
.onhover {
    -webkit-transform: scale(1.25);
    -moz-transform: scale(1.25);
    -ms-transform: scale(1.25);
    -o-transform: scale(1.25);
    transform: scale(1.25);
}

This leads to the displayed outcome seen here (disregard any pixelation from screen capture):

https://i.sstatic.net/dQdZs.gif

> DEMO

Answer №5

Discover the power of Pixel Selection: an innovative JQuery library that can easily manage transparency in hovering effects.

$(function() {
  $('img').Pixelselect({
    over: function(e, obj, hit) {
      if (hit) {
        obj.addClass('hover');
      } else {
        obj.removeClass('hover');
      }
      e.preventDefault();
    },
    out: function(e, obj) {
      obj.removeClass('hover');
      e.preventDefault();
    },
    sublayers: true
  });
});

img {
  -webkit-transition: all 1s ease;
  /* Safari and Chrome */
  -moz-transition: all 1s ease;
  /* Firefox */
  -ms-transition: all 1s ease;
  /* IE 9 */
  -o-transition: all 1s ease;
  /* Opera */
  transition: all 1s ease;
  opacity: 1;
}
img.hover {
  opacity: 0.5;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div style="position: relative; left: 0; top: 0;">
  <img src="https://i.sstatic.net/80Jxj.png" style="position: absolute; top: 0; left: 0;" />
  <img src="https://i.sstatic.net/Eewcq.png" style="position: absolute; top: 0; left: 0;" />
  <img src="https://i.sstatic.net/VXk7A.png" style="position: absolute; top: 0; left: 0;" />
</div>

(It's important to note that scaling the images may affect the hover area, and all images must be from the same domain for optimal functionality.)

Answer №6

Check out the demo here
I've utilized z-index to layer three divs, each with its own unique background-image.

z-index is essentially used for stacking, placing the Middle Circle on top, the second circle in between the Largest Circle and Middle Small Circle, and the Largest Circle at the bottom. This setup ensures that mouse hover effects work independently on each circle, as they are arranged in increasing z-index values, making them visible and interactive. The allImg ID is used to manage alignment and size, with all child divs automatically resizing based on percentages.

/*Outer Div use for alignment and to set size*/
#allImg{
width: 200px;
height: 200px;
margin: 0 auto;
position: relative;
 top:100px;
}
/*Styling appling to all desendant div inside allImg*/
#allImg > div{
position:absolute;
padding: 0px;
-webkit-transition: all 1s ease;/* Safari and Chrome */
    -moz-transition: all 1s ease;/* Firefox */
    -o-transition: all 1s ease; /* IE 9 */
    -ms-transition: all 1s ease;/* Opera */
    transition: all 1s ease;
    position: absolute;
padding: 0px;
transition: all 1s ease 0s;
border: 1px solid #000;
border-radius: 100px;
}
/*Div with smallest z-index i.e outer circle*/
#img1{
background-image: url('https://i.sstatic.net/GWShR.png');
background-size: 100% 100%;
width: 100%;
height: 100%; 
z-index: 1;

}

#img1:hover{
-moz-transform: scale(1.25);/* Firefox */
-webkit-transform:scale(1.25); /* Safari and Chrome */
    -ms-transform:scale(1.25); /* IE 9 */
    -o-transform:scale(1.25); /* Opera */
     transform:scale(1.25);
}
/*Div with greater z-index  then Outer circle i.e 2nd circle*/
#img2{
background-image: url("https://i.sstatic.net/eWisy.png");
background-size: 100% 100%;
width: 50%;
height: 50%;
left: 25%;
top: 25%;
z-index:2;

}
#img2:hover{
-moz-transform: scale(1.16);/* Firefox */
-webkit-transform:scale(1.16); /* Safari and Chrome */
    -ms-transform:scale(1.16); /* IE 9 */
    -o-transform:scale(1.16); /* Opera */
     transform:scale(1.16);
}
/*Div with greatest z-index i.e middle circle*/
#img3{
background-image: url("https://i.sstatic.net/VjygS.png");
background-size: 100% 100%;
width: 30%;
height: 30%;
left: 35%;
top: 35%;
z-index:3;
}
#img3:hover{
-moz-transform: scale(1.13);/* Firefox */
-webkit-transform:scale(1.13); /* Safari and Chrome */
    -ms-transform:scale(1.13); /* IE 9 */
    -o-transform:scale(1.13); /* Opera */
     transform:scale(1.13);
}
<div id="allImg">
  <div id="img1"></div>
  <div id="img2"></div>
  <div id="img3"></div>
</div>

Additionally, remember to crop the images to their actual size as advised by @Dave Gomez

Answer №7

In order to achieve this effect, you can check out the => JSFiddle demo :)

    div:hover > img {
    -webkit-transform:scale(1.25); /* Safari and Chrome */
    -moz-transform:scale(1.25); /* Firefox */
    -ms-transform:scale(1.25); /* IE 9 */
    -o-transform:scale(1.25); /* Opera */
     transform:scale(1.25);
}

Answer №8

Consider this solution:
(using The HTML map element)

var vi = function(el) {
  
  var imgEl  = document.getElementById(el.getAttribute('data-img'));
  if(imgEl) imgEl.classList.add('effectOn');
}

var vo = function(el) {
  
  var imgEl  = document.getElementById(el.getAttribute('data-img'));
  if(imgEl) imgEl.classList.remove('effectOn');
  

}
img {
    -webkit-transition: all 1s ease; /* Safari and Chrome */
    -moz-transition: all 1s ease; /* Firefox */
    -ms-transition: all 1s ease; /* IE 9 */
    -o-transition: all 1s ease; /* Opera */
    transition: all 1s ease;
}

img.effectOn {
    -webkit-transform:scale(1.25); /* Safari and Chrome */
    -moz-transform:scale(1.25); /* Firefox */
    -ms-transform:scale(1.25); /* IE 9 */
    -o-transform:scale(1.25); /* Opera */
     transform:scale(1.25);
}
<div style="position: relative; left: 0; top: 0;">
  
  <img id='main' src="https://i.sstatic.net/80Jxj.png" style="position: absolute; top: 0; left: 0;" usemap='#main' />
  <img id='middle' src="https://i.sstatic.net/Eewcq.png" style="position: absolute; top: 0; left: 0;" usemap='#main'/>
  <img id='center' src="https://i.sstatic.net/VXk7A.png" style="position: absolute; top: 0; left: 0;" usemap='#main'/>

  <map id="main">

    <area shape="circle" onmouseover='vi(this)' onmouseout='vo(this)' data-img='center' coords="147,147,58" />
    <area shape="circle" onmouseover='vi(this)' onmouseout='vo(this)' data-img='middle' coords="147,147,90" />
    <area shape="circle" onmouseover='vi(this)' onmouseout='vo(this)' data-img='main' coords="147,147,147" />

  </map>

</div>

This technique can be applied to various shapes like rectangles, triangles, polygons, etc...
The key challenge is defining the boundaries of the map, but there are tools such as GIMP that can assist with that.

Answer №9

Just a single image and the other two created using html/css. You can view the effect in this fiddle:)

https://jsfiddle.net/keypaul/8dr25184/

Here is the HTML code:

<div id="wrap">
    <div></div>
    <div></div>
    <img src="https://i.sstatic.net/bFfbC.png" alt="" />
</div>

And here is the CSS code:

#wrap {
    position:relative;
    width:280px;
    height:280px;
}

#wrap img{
    position:relative;
    max-width:100%;
    height:auto;
    top:0;
    left:0;
    z-index:1;
    transform: scale(1);
    transition: 0.4s;
}

#wrap img:hover {
     transform:scale(1.25);
}

#wrap div:nth-child(1){
    background: transparent;
    border: 15px solid red;
    border-radius: 100px;
    height: 99px;
    left: 75px;
    overflow: hidden;
    position: absolute;
    top: 77px;
    width: 99px;
    z-index: 2;
    transform: scale(1);
    transition: 0.4s;
}

#wrap div:hover:nth-child(1){
    transform: scale(1.5);
}

#wrap div:nth-child(2){
    background: transparent;
    border: 20px solid red;
    border-radius: 40px;
    height: 34px;
    left: 103px;
    overflow: hidden;
    position: absolute;
    top: 105px;
    width: 34px;
    z-index: 3;
    transform: scale(1);
    transition: 0.4s;
}

#wrap div:hover:nth-child(2){
    transform: scale(1.5);
}

You just need to remove the small inner circle from the large png, adjust the colors of the donuts, and include vendor prefixes in the CSS.

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BOOTSTRAP Issue: The sticky footer in the template is not staying sticky

I am at the point where I am tempted to open my window and throw my computer out. I followed a tutorial on Bootstrap for the footer template. Everything looks good, but when my text extends beyond one page, the footer remains stuck in place and does not m ...

htmlcsstwitter-bootstrapbootstrap-5

I am having trouble getting my dropdown to line up with the drop button labeled "MORE"

Despite trying multiple approaches, I am still struggling to align the dropdown content with the dropbtn. My goal is to have the content consistently positioned below the more menu. HTML: ` <html> <meta name="viewport" content="width=device-widt ...

cssalignmentnavbardropdownpositioning

Assign a class to the checkbox of the first parent

I have a set of checkboxes generated using a for loop. I want the first checkbox to act as a parent, and all other checkboxes should act as children. When the parent checkbox is clicked, all child checkboxes should be checked. Although I have code to achi ...

jqueryhtmlcss

Developing a personalized file upload button in React

I have been working on creating a custom <input type="file"> upload button in React. My goal is to display the name of the uploaded file on the button itself after the upload. I encountered some challenges while trying to create a codepen demo, so I ...

javascripthtmlreactjscssecmascript-6

Guide on debugging Express.js server code on Node with Visual Studio Code by Attaching to a live process

Here is a list of the tools I have: Latest Visual Studio Code Express js Node js Take a look at my Attach configuration below: { "version": "0.1.0", // List of configurations. Add new configurations or edit existing ones. "configurations": ...

javascriptnode.jsdebuggingexpressvisual-studio-code

How can a parameter be added to a query string only when there is a value present in a textbox using JavaScript?

Hello everyone, I am looking to add parameters to a URL only if the search text box value is different from the default. I have three search text boxes and I want to include them in the URL. Below is my code snippet: $("#search-btn").click(function (e) { ...

javascriptjqueryajaxservlets

JavaScript in Internet Explorer is showing an error message stating that it is unable to access the property '0' of an undefined or null

JavaScript Code function update() { var newAmt = 0; var newtable = document.getElementById("tbl"); for ( var i = 0; i < newtable.rows.length; i++) { innerTable = newtable.rows[i].cells[0].childNodes[0]; if ( (innerT ...

javascriptjquery

Unable to click on the icon when modifying Mui Text Field

Utilizing the MUI Text Field component, I have successfully added a select prop to transform it into a dropdown list with values and an icon. However, I encountered an issue while attempting to change the default dropdown icon to a custom one from Figma. D ...

javascriptreactjsmaterial-ui

I am having trouble getting my footer to align properly in a vertical position

My goal is to have my li elements remain on the same line, but unfortunately, they are not cooperating (they are aligning horizontally, but that's all). Here is the code snippet: <footer> <div class="container"> <div id="coi ...

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NextJS with the added option of customizable CSS styling

I'm having trouble getting my custom CSS library to work with my components in NextJS. I'm attempting to import my custom CSS file in my components, but it doesn't seem to be working. import React from 'react' import '../../s ...

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