I need the div to be in the center of the page at all times whether user resizes webpage or not.
I have tried using:
margin: auto;
margin: 0 auto;
margin-left: auto; margin-right auto;
but neither of those three worked.
HTML:
<div id="grayinnerbackground">
</div>
CSS:
div#grayinnerbackground {
margin: auto;
width:1000px;
background-color: #D9D9D9;
height: 100%;
position: fixed;
z-index: -1;
}
Here is a fiddle for an example of what I'm talking about.
http://jsfiddle.net/ymvDJ/
Thanks.
If you do want the position to be fixed, add these rules and drop the usual margin trick:
left: 50%;
margin-left: -25px; // half the width of your element
See it here: http://jsfiddle.net/8DfnG/2/
You can use
position: fixed;
left: 50%;
width: 50px;
margin-left: -25px; /* width รท 2 */
Demo: http://jsfiddle.net/ymvDJ/3/
Use:
position: relative
If that still doesn't work you may need to add this as well:
display: block;
"position: fixed" means that no matter what it stays at a x and y coordinate.
You can try this
div#grayinnerbackground {
margin: auto;
position: absolute;
top: 0; left: 0; bottom: 0; right: 0;
width: 50px;
background-color: #D9D9D9;
height: 100%;
}
http://jsfiddle.net/g49Mb/
More about the working here: http://codepen.io/shshaw/full/gEiDt
This this HTML:
<div id="grayinnerbackground">
foo
</div>
CSS:
div#grayinnerbackground {
margin: auto;
width: 50px;
background-color: #ccc;
height: 100%;
}
I'm not entirely sure why it didn't work until I put text into the div, checking something now.
UPDATE
Sigh, ok, i'm tired. If the div is empty, and you have a height of 100%, it is going to be 100% the height of its parent, the <body> in this case. Since there is no other content, the <body> has a height of 0. Give the <div> an absolute height, and it will pop in:
div#grayinnerbackground {
margin: auto;
width: 50px;
background-color: #ccc;
height: 10px;
}
Remove position: fixed, change the width to 50px and make sure you have a 0 before auto in margin: auto.
Update:
To have the div be as high as the window, be sure to set the body and html to height: 100%; too:
body, html {
height: 100%:
}
Updated jsfiddle again
Related
I have seen some web design lessons that always start with a css like this:
body,html {
display: block;
width: 100%;
height: 100%;
padding: 0;
margin: 0;
}
I'm trying to figure out what's the point of declaring attributes like width, height or display for body and html that are, if I'm not wrong, by default in browsers.
I thought it would be to prevent and undefined return or similar when accessing the css with js, but the result is the same when the attributes are defined in the css than when left to default:
console.log($("BODY").css('width')); // Always returns the width of the body
I also thought it could be to start the inheritance in cascade elements, but a div inside the body inherits the value just the same.
Anybody knows a solid reason for this approach? any browser / device issue I have missed? future compatibility? plain pedantry?
I'm kind of curious about it.
I found a good reason to define the html and body width and height to 100%. Say you want to vertically align a relative positioned div, you need to put it into an absolute positioned container:
html,
body {
margin: 0;
padding: 0;
}
#container {
position: absolute;
width: 100%;
height: 100%;
}
#main {
background: lightgrey;
position: relative;
top: 50%;
transform: translateY(-50%);
width: 100px;
height: 100px;
text-align: center;
margin-left: auto;
margin-right: auto;
}
<div id="container">
<div id="main">
<h1>MY DIV</h1>
</div>
</div>
But, setting the body width and height to 100% you get an absolute positioned container that covers the whole window:
html,
body {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
}
#main {
background: lightgrey;
position: relative;
top: 50%;
transform: translateY(-50%);
width: 100px;
height: 100px;
text-align: center;
margin-left: auto;
margin-right: auto;
}
<div id="main">
<h1>MY DIV</h1>
</div>
You get the same result, but it saves you a div element.
Firstly, I know this may seem like a duplicate of Positioning child content outside of parent container, but this is slightly different.
I've only had success floating an image outside of its parent container if I use an absolutely positioned div with the background-image set. Example of code used to achieve this:
.image {
position: absolute;
top: 0;
left: 0;
margin-top: -30px;
margin-left: -10px;
display: block;
height: 200px;
width: 140px;
}
Now I need to achieve the same with an <img /> element. What I'm hoping to achieve is something like this:
So the image should actually spill over on the left and right of the parent container. I've tried similar methids as given above, but without success. Any advice?
something like this?
.parent {
display:inline-block;
width: 100px;
height: 300px;
background-color:lightgray;
margin-left: 100px;
}
.child {
width: 200px;
height:100px;
border-radius: 100px;;
background-color:gray;
position:abolute;
margin-left: -50px;
margin-top:100px;
}
<div class='parent'>
<img class='child'/>
</div>
edit: as per the comments below this is what i see
See the method bellow
Wrap the image in a DIV
Add border-radius to achieve the egg like shape
Add overflow with a value of hidden to the image container
use an image that's bigger than it's container so that it will take on the egg like shape.
#square {
width: 300px;
height: 300px;
background-color: #6D9BBE;
position: relative; /* Relative to curtail overlap */
margin: 0 auto;
}
#square #eggy {
width: 380px;
height: 200px;
background-color: #8500B2;
border-radius: 50%;
position: absolute;
top: 50px;
left: -40px;
overflow: hidden;
}
#eggy img {
width: 390px
height: 240px;
}
<div id="square">
<div id="eggy"><img src="http://s9.postimg.org/xnmcpb0jz/use_this.png"/></div><!-- End Eggy -->
</div><!-- End Square -->
For some reason my fixed div at the top of my website decided to ignore my wrapper and go the right.
This is the CSS code of both my fixed div and my wrapper:
div.colorChanger {
background-color: #0f4a1d;
padding: 0.5%;
position: fixed;
width: 100%;
z-index: 1;}
#wrapper {
width: 1000px;
margin: -10px auto;
background-color: #78ad00;}
And here's what it looks like.
Ok, looks like your.colorChanger is overflowing outside your wrapper. Just use overflow: hidden.
Here's what that CSS would look like:
#wrapper {
width:1000px;
margin: -10px auto;
background-color: #78ad00;
overflow:hidden; }
EDIT: Fixed position
I noticed you're using a position: fixed on the .colorChanger. Overflow doesn't apply to elements with a fixed position, so maybe you could just change it to position: absolute instead.
Your code should look like:
div.colorChanger {
background-color: #0f4a1d;
padding: 0.5%;
position: absolute; // not 'fixed'
width: 100%;
z-index: 1;}
#wrapper {
width: 1000px;
margin: -10px auto;
background-color: #78ad00;
position: relative;
overflow: hidden; }
An alternative, fixed width
Like I said, overflow: hidden doesn't apply to fixed elements. The alternative is to just use fixed width:
div.colorChanger {
...
width: 1000px;
box-sizing: border-box; }
This is a common question but slightly different from the solutions I found and I've been trying to solve it without success, so if someone could give me a help on this I would appreciate.
I have a #wrapper div that stretches to 100% width and height of browser. So far, so good... Now, inside the #wrapper I need a #content div that auto stretches with the parent div maintaining a 30px margin around it. I (almost) managed to do it but I can't make the #content div stretch in its height.
Here's an example of what I'm trying to do:
This is the CSS code I have:
* {
margin: 0;
padding: 0;
outline: 0;
}
html, body {
height: 100%;
width: 100%;
text-align: center;
cursor: default;
}
#wrapper {
width: 100%;
min-height: 100%;
height: auto !important;
position: absolute;
background: #333;
text-align: center;
}
#content {
/*width: 100%;*/
min-height: 100%;
height: auto !important;
margin: 30px;
overflow: hidden;
background: #ccc;
}
This is the HTML:
<body>
<div id="wrapper">
<div id="content">
This DIV should stretch to 100% height of its parent and body
minus the 30px margin around and resize as the window is resized.<br />
It's working in width but not in height!<br /><br />
Whatever goes in here (a child DIV) no matter its size should not be
visible beyond this DIV boundaries (as the Overflow is set to "hidden")!
</div>
</div>
</body>
And this is what I'm getting in both Chrome and IE:
Any help on this? Is it possible? Am I missing something stupid?
Thanks in advance,
LM
In your .css, replace #content with the following
#content {
overflow: hidden;
background: #ccc;
position: absolute;
top: 30px;
left: 30px;
right: 30px;
bottom: 30px;
}
#content {
min-height:90%;
position:absolute;
margin: 5%;
overflow: hidden;
background: #ccc;
}
So, I've seen tons of questions about this, but I would like a personal example. I'm rather new to programming, so I may be a little stupid...
Anyway, I have two <div>s, one with id bg and the other with class player.
This is what it looks like:
The red box is the player, and the large image is the bg.
I need the player to start in the center of the bg.
The bg is 640px X 640px.
This is the code I have so far in my CSS file:
#bg {
width: 640px;
height: 640px;
top: 0;
left: 0;
}
.player {
position:relative;
background-color:#FF0000;
width: 32px;
height: 32px;
top: 0px;
left: 0px;
}
Try changing your stylesheet to:
#bg {
width: 640px;
height: 640px;
top: 0;
left: 0;
position: relative;
}
.player {
position: absolute;
background-color: #FF0000;
width: 32px;
height: 32px;
top: 320px;
left: 320px;
z-index: 1;
}
And your HTML should look like this:
<div id="bg">
<!-- your bd code here -->
<div class="player"></div>
</div>
position: relative is relative to where the object would be placed normally. In your example, it would normally come below the first div, so that's where it will stay. (In other words position: relative used with a positioning of 0 won't move the objet anywhere.)
You could add top: -320px; left: 320px. That would position it it the space of the first div. But maxksbd19's answer is probably the better solution for your ultimate goal.
I try and avoid absolute positioning as it does not adapt to the container size and a change to the container requires you to go through your css and change all the absolute values.
I would do the following
CSS:
#bg {
overflow: auto; /* stops the .player from from moving #bg down */
width: 640px;
height: 640px;
background-color: blue;
text-align: center; /* center child div in IE */
}
.player {
background-color: White;
width: 32px;
height: 32px;
margin: 0 auto; /* center div in parent for non IE browsers */
margin-top: 304px; /* 50% from top minus div size */
}
HTML:
<div id="bg">
<div class="player"></div>
</div>
Now you only have to keep track of the top margin of the child container.