My Goal:
So I am making a webpage with a map of the USA as the "background image" and on top of that map I have about 10 markers pointing to specific location. The markers are NOT part of the picture thats just me adding them with absolute positioning and top and left with a percentage.
The Problem:
As I scale down the page or scroll up and down the markers that I have set with absolute positioning begin to move out of the spot they are suppose to be on because the background-image is getting smaller do to it displaying 100%.
The Question:
How can I achieve what I want with the markers on the map where they are suppose to be not moving as the window is being scaled down?
Now I know of only 1 solution and this solution can take a VERY LONG TIME. What I was thinking is instead of positioning the markers that I want on the map with percentage I can do it with pixels and then use a TON of media queries and keep on adjusting it. Not only is this solution going to take extremely long but it also does not seems like the correct way to go about this.
HTML:
<div class="container main-content"><!--the map background image is set here-->
<div class="row relative">
<div class="eq-content-wrap">
<div class="eq-content">
<div class="marker"></div> <!--the marker that is positioned absolute-->
</div>
</div>
</div>
CSS:
html, body{
width: 100%;
height: 100%;
margin: 0px;
padding: 0px;
background: #000;
}
body{ overflow: hidden; }
.main-content{
background: url('assets/img/map1.jpg') no-repeat top center;
background-size: contain;
height: 100% !important;
width: 100% !important;
}
.eq-content-wrap{
position: absolute;
width: 500px !important;
top: 22%;
left: 40%;
}
.marker{
height: 40px;
width: 40px;
border-radius: 100%;
background-color: red;
position: absolute;
top: 50%;
margin-top: -20px;
}
The problem is that your background image's size is set to 100%: background-size: 100%. This means that when the browser tries to scale the content, the background does not scale with it (it stays 100%).
Your best bet is to remove the background-size property completely. This allows the markers to stay in place when the page scales, however, you won't get the full-screen background effect that you currently have (unless you have a larger image).
The background will still move, however, once the browser window width is less than the image's width. This is because you have the background-position set to top center. The center is what causes it to move once the browser window width is less than the image width. Change center to left and it will fix that issue. You'll also need to set the marker's container to be based to the left as well for this to work on wider screens though. Basically, removing all center properties would help, but the screen wouldn't be centered on a wide screen.
Try substituting css :before pseudo element for .marker ; set percentage unit values utilizing calc()
html,
body {
width: 100%;
height: 100%;
margin: 0px;
padding: 0px;
background: #000;
}
body {
overflow: hidden;
}
.main-content {
background: url(http://lorempixel.com/400/300) no-repeat top center;
background-size: contain;
height: 100% !important;
width: 100% !important;
}
.eq-content-wrap {
position: absolute;
width: 500px !important;
top: 22%;
left: 40%;
}
.main-content:before {
content: " ";
height: calc(12.5%);
width: calc(5%);
border-radius: 100%;
background-color: red;
position: absolute;
top: calc(50%);
left: calc(50%);
margin-top: calc(1%);
}
<div class="container main-content">
<!--the map background image is set here-->
<div class="row relative">
<div class="eq-content-wrap">
<div class="eq-content">
<div class="marker"></div>
<!--the marker that is positioned absolute-->
</div>
</div>
</div>
jsfiddle http://jsfiddle.net/o79rpawc/
Related
I am a fullstack developer but css is my my weak point so I decided to put more effort on it. I have a weird situation and could not figure out why. The issue is I could not adjust the image height and wide properly. I m using reactstrap, bootstrap and scss but i make sure that bootstrap code will not overwrite my css:
import "bootstrap/dist/css/bootstrap.min.css";
import "../styles/main.scss";
here is the part of html:
<Col md="6">
<div className="hero-section">
<div className={`flipper ${isFlipping ? "isFlipping" : ""}`}>
<div className="front">
<div className="hero-section-content">
<h2> Full Stack Web Developer </h2>
<div className="hero-section-content-intro">
Have a look at my portfolio and job history.
</div>
</div>
<img
alt="programming welcome picture"
className="image"
src="/images/original.png"
/>
<div className="shadow-custom">
<div className="shadow-inner"> </div>
</div>
</div>
</Col>
here is the related css code:
.hero-section {
h2 {
color: black;
font-weight: bold;
margin-bottom: 10px;
}
perspective: 10rem;
color: black;
font-weight: bold;
width: 40rem;
position: relative;
&-content {
position: absolute;
bottom: 20px;
width: 360px;
left: 6%;
z-index: 1;
&-intro {
font-size: 17px;
}
}
}
.image {
max-width: 100%;
// background-size: cover;
max-height: 50%;
position: relative;
background-position: center;
}
with this I have this:
however with this .image
.image {
max-width: 100%;
// background-size: cover;
// max-width: 100%;
max-height: 100%;
position: relative;
background-position: center;
}
I have same view. height changes if I change the width but i just want to change the height.
image css i am having this
with this .image
.image {
max-height: auto;
max-width: 100%;
background-position: center;
background-size: cover;
}
i am getting text outside the image :( even though the max-width: 100% it is not as wide as first image :(
[Edit]: I forgot I am the only one on this earth that allowed to have a well working stackblitz so just in case here is the code :
<div className="content">
<h2>FullStack developerdfghbdfg</h2>
<p>Were you looking for something like this ?</p>
</div>
And the CSS part :
.content {
padding: 15px;
padding-top: 200px;
max-width: 200px;
background-image: url('https://picsum.photos/200/300'); /* you need an HD image to do this */
background-size: cover; /* because thiswill strech your image */
color: red; /* pretty disgusting yeah ! */
}
Are you looking for something like this ? Stackblitz example
If not, can you provide the shape of your image please ? I mean, is it a loooong vertical image full of blue, or is it just the boy and screen and books and stuff and a background color set to the same blue for your container ?
why is the text outside the image?
TL;TD: the image is narrower than 40rem.
Here's the too long to read version:
by setting max-width to 100%, the image would allow itself to take 100% of its intrinsic width, but since the height is set to auto, the image width would be dictated by the intrinsic height of the image, making it a fractional width from 100%.
why is image wider and taller from your 1st scenario below?
.image {
// allows the image to take up 100% of its width
max-width: 100%;
// allows the image to take up 100% of its height
max-height: 100%;
...
}
the image is taking up the intrinsic width/height values since the <img> element is a replaced element type and its object-fit css property is not defined.
resolution 1
set div.hero-section to a fixed width and height, like this
.hero-section {
// ie. height/width can be anything you like
height: 20rem;
width: 40rem;
...
}
then set the object-fit property to cover in the .image class
.image {
...
object-fit: cover
}
resolution 2
use the image as a background image. Take out the .img class and the image markup entirely from HTML. Set the .hero-section css like this
.hero-section {
...
width: 40rem;
height: 20rem;
background-size: cover;
background-position: center;
background-image: url("/images/original.png");
...
}
I have a mock of the code in my codesandbox below
I am trying to do something basic (beginner in programming).
I try to take a large image and a smaller container, and move the image up or down inside while the user scrolls.
So you can .
Move the yellow up or down while the user can see the red in the same position (kept in doc flow).
If i create an image using this :
<div class="cvrContainer top left">
<div class="cvrPhoto" id="photo0" style="background-image: url(https://picsum.photos/900/850);"></div>
</div>
Should i set cvrPhoto to be larger then cvrContainer say 200% ?
How do i move it up/down with JS while keeping overflow hidden.
I do not ask how to calculate, only how to set it and move the only yellow inside
If you want to create simple parallax effect, you can achieve this effect by position fixed, add position: fixed on .cvrPhoto div.
.cvrContainer {
padding: 30px;
width: 100%;
height: 2000px;
overflow: auto;
background: url(https://picsum.photos/900/850);
}
.cvrPhoto {
height: 300px;
width: 200px;
position: fixed;
top: 57px;
background: yellow;
}
<div class="cvrContainer style=" background-image: url(https://picsum.photos/900/850); "">
<div class="cvrPhoto"></div>
</div>
I solved it by using css for the inner image (not background image but img tag) :
.prlxPhoto
{
position: absolute;
left: 50%;
top: 50%;
-webkit-transform: translateY(-50%) translateX(-50%);
}
and move it left/right for example with :
var e = document.getElementById("1");
e.style.marginLeft = equotion+'px';
Image:
I have a container div (yellow) which I’d like to keep at 50% width of the window. A child of that container is an image div (purple) that stretches to 100% of the parent container’s width. and there’s a sticky label (pink) on top of the image div (position: absolute so it can be offset relatively to the image). I'd like to keep that entire half of the screen fixed positioning so it stays sticky as I scroll.
There’s also a title under the image, and that title needs to be visible no matter if someone shrinks the window vertically. So in that scenario the image div should shrink vertically, if needed, in order for that title to be shown.
Basically I'm trying to have the image div always be 100% width of the parent container div. With the image div having a max % height so it can shrink vertically. Or have it keep a fixed aspect ratio (3:4 or whatever) when it shrinks vertically.
I'm trying to avoid using fixed pixels, or ems, in the entirety of my CSS. since the website needs to be stretchy/‘fluid’ vertically, because that title under the image has to show.
HTML looks roughly like:
<wrapper>
<left-column>
<normal text and scrollable stuff>
<right-column-yellow>
<image sticky label-pink>
<image div-purple>
<image title>
Sorry if this is damn confusing my brain is fried! Can anyone pls help me?
You can divide your left and right panel by using position fixed.
If I'm not wrong with your description, this is the answer.
<div class="wrapper">
<div class="left">
<p><!--Some very long text--></p>
</div>
<div class="right">
<div class="image">
<div class="label">Label</div>
<div class="title">Title</div>
</div>
</div>
Some CSS
.left,.right{
position: fixed;
width: 50%;
height: 100%;
display: inline-block;
}
.left{
left:0;
top: 0;
overflow: auto;
}
.right{
right: 0;
top:0;
background-color: yellow;
}
.right .image{
position: relative;
width: 100%;
height: 50%;
top: 50%;
left: 0;
background-color: #fff;
transform: translateY(-50%);
}
.right .image .label{
position: absolute;
left: 0;
right: 0;
top: -10px;
text-align: center;
width: 200px;
background-color: pink;
margin: auto;
}
.right .image .title{
position: absolute;
left: 0;
right: 0;
bottom: -40px;
text-align: center;
width: 200px;
background-color: #000;
margin: auto;
color: #fff;
font-size: 30px;
}
You can refer to my codeine as well.
https://codepen.io/masonwongcs/pen/WMJGZb
I am building a product builder for an online store. I got the image to zoom in on hover and scroll but it scrolls to the top left. when I set the origin to center it zooms in at the center but does not scroll to the left or to the top. Also non-mac users are not able to scroll left-right with the mouse scroll wheel so I'd like to be able to scroll by dragging. Any help would be greatly appreciated.
Here's the code:
HTML:
<div id="option_image" class="rotationViewer option_image spritespin-instance" style="max-height: 544px; -webkit-user-select: none; overflow: hidden; position: relative; width: 3600px; height: 3600px;" unselectable="on">
<div class="spritespin-stage" style="width: 3600px; height: 3600px; top: 0px; left: 0px; position: absolute; display: block; background-image: url("//www.shappify-cdn.com/images/78432/86058914/001_first-screen.png"); background-size: 500px 500px; background-position: 0px 0px; background-repeat: no-repeat;"></div>
<div class="spritespin-preload" style="width: 3600px; height: 3600px; top: 0px; left: 0px; position: absolute; display: none;"></div>
</div>
CSS:
#option_image:hover {
width: 500px !important;
height: 500px !important;
overflow-x: auto !important;
overflow-y: auto !important;
}
.spritespin-stage {
transition: all .2s ease-in-out;
position: absolute !important;
}
.spritespin-stage:hover {
margin: center;
transform: scale(5);
transform-origin: top left;
}
Not sure why those styles are set inline and the rules within the style tag are being set with !important. That is specificity creep. Also, the width of the container is being fixed inline and then clipped in a max width. This all makes your task of debugging and refining more difficult.
A more central problem appears to be one of focus. Your container div is not focusable. When the user hovers, any scrolling with a scroll wheel will scroll whatever element has focus if it meets the conditions for scrolling to occur. You could give your .option_image container a tabindex attribute of zero if focusing fits the user experience you're going for.
I'm looking for a way to darken all of the area within a container except for a transparent child div. This div is draggable, so the dimmed area would have to move with it. Does anyone know of a way to achieve this using jQuery/CSS? Here is a picture of the effect I am trying to achieve:
EDIT: SOLVED
See #Robby Cornelissen's answer
Could do something like this fiddle. It relies on an absolutely positioned viewport element with a fixed background. If you click the viewport element, you'll see that it moves while the background stays fixed.
HTML
<div class="back">
<div class="overlay">
<div class="front">
</div>
</div>
</div>
CSS
.back, .front {
background-image: url("http://upload.wikimedia.org/wikipedia/commons/thumb/5/51/Swallow_flying_drinking.jpg/1024px-Swallow_flying_drinking.jpg");
background-attachment: fixed;
background-position: 0,0;
}
.back {
width: 1024px;
height: 623px;
}
.front {
position: absolute;
left: 200px;
top: 50px;
width: 300px;
height: 150px;
z-index: 100;
}
.overlay {
width: 100%;
height: 100%;
background-color: rgba(0,0,0,0.5);
}