I have a few divs on my code all of them positioned correctly how i want it. The only problem is that they do not re size when i shrink the page. I want to be able to re size them according to the web browsers size. I do not know exactly how to do it and im worried it might mess up their correct top & left position. All of my divs are currently set as absolute positioning.
Set their sizes to percent values rather than pixels (I asume that's what you're using)
Set all divs with percent values.
Or
You can use 'media rules' of css3:
#media screen and (max-width: 300px) {
.div-a {
background-color: lightblue;
}
}
You have basically 3 options
Bootstrap (http://getbootstrap.com/)
Use percent values instead of pixels
Use vh (view height) and vw (view width). Here's an example: http://jsfiddle.net/7m55nur1/
Note that width: 75vw; keeps the div width at 75% of the web browser. Same as margin-left: 12.5vw which keeps the margin on the left at 12.5% of the browser size.
I figured it out, basically what i did what get the width (lets say it's 300 pixels) and figure out the percent of the page width (in my case is 1900 pixels).
The result would be 15.789473684210526%
putting that exact value worked just fine! As accurate as a pixel.
I used this tool:
http://www.onlineconversion.com/percentcalc.htm
Thank you all for your replies!
Related
I'm trying to create a responsive web site. For that I found a nice looking template and adjusted it according to my needs.
One thing however came up where I couldn't find a solution so far - and that is resizing of images with different dimensions.
Let's say I have an image with a width of 600px and one with a width of 500px.
My screen size is 700px. I want both images to be shown at their native width (600px & 500px).
Now I reduce my screensize to 550px. I want the 600px image to be resized to 550px. No changes to the 500px image because the native width is still smaller than the screen.
Now I reduce the screensize to 400px. Both images should now also be reduced to 400px accordingly.
I've been googling and reading here for hours but could not find an automatic solution for this.
Best thing I found is is setting <img style="width:100%;max-width:xxx px;" where xxx is the original width of the image. But... I'd have to do this manually for each and every image!
Without max-width the image would always be strechted to 100% of the screen size.
As an alternative I found some JavaScript that calculates the original width of the image and could be used to fill out the max-width value.
If someone disables JavaScript (EG by using NoScript browser adddon) the whole thing wouldn't work.
Since I'm printing out my website using Perl I could do the calculation with Perl as well. That would help against disabled JavaScript. But still...
Are there really no better solutions? Do I really have to calculate the max-width for each and every image?
Here's the current work-in-progress: https://www.digioso.org/html5up-striped
The template features an image fit class that basically sets the width to 100% of the container and then I added the same image using width=100%;max-width=400px .
The image fit makes the image always use 100% of the screen which I don't want.
Thanks a lot!
Do not apply an explicit width or height to the image tag. Instead, give it:
max-width:100%;
max-height:100%;
check: How do I auto-resize an image to fit a 'div' container?
If you have something like this in your css:
img {
width: 100%;
}
The image tries to assume its actual size and is automatically adjusted accordingly with the container.
If you need to resize the image when your screen gets smaller, you can use #media and define the relative behaviour.
#media (max-width: 700px) {
img {}
}
Im really struggling to articulate what im trying to achieve, please bear with me on this..
I've got a small "widget" on the left and side of my page.
This work fine on bigger screens.
For example, the widget is say 300px wide in the style.
However, If i load the page on a mobile or shrink the window, This becomes unfeasably small.
How do i get it to automatically change from 300px to full 100% width if a "smaller" viewspace is observed?
So say, i shrink my window , it would suddenly jump to be 100% wide rather than 300px? ( or similar)
Any ideas?
Sorry if I haven't explained it well enough. I've googled and nothing really sticks out that achieves what im doing.. maybe im not looking for the correct terms.. In a bit of a i dont know what i dont know to google it.
Cheers
What you're trying to say is "How can I make my website responsive?". You can do that with the CSS Media Queries. Check the link and google for more informations.
To give you an idea, just try this:
.my-class{
color: white;
background: black;
width: 300px;
}
#media (max-width: 600px) {
.my-class {
width: 100%;
}
}
<div class="my-class">
Some text!
<div/>
The break point here is at 600px, for large screens you have the width of the div is at 300px, for small screens you'll get the width taking 100%. (Try to resize the width of the current window while running the snippet to understand how it works).
edit: you can also use as the following style (the idea is in the min-width), if this is what you're looking for.
my-class{
width: 300px;
min-width: 100%; /* or 100vw depending on what you want */
}
Apparently,you are using the CSS-Unit "px". If you want to have a size relative to the screen, the units %, vw and vh would be useful.
% is relative to the parent element, which is probably the whole document, so you could work with that as a relative unit.
vh represents the percentage of the viewports heigth, so you could use it for the heigth of your widget
vw represents the percentage of the viewports width, so you could use it for the width of your widget
These were just some examples, if you want to learn more about the CSS Units, go to https://www.w3schools.com/CSSref/css_units.asp
I hope I could help you.
However, if you want to keep your px unit you can use the media query, as already mentioned by Il Saggio Vecchino. This allows you to have a different design at different devices.
Also take a look at https://www.w3schools.com/css/css_rwd_mediaqueries.asp
I want my site to stop resizing (stop being responsive and lock at the desired size) after user minimizes it to a certain point lets say 10inch screen in pixels and when u scroll left of right it is not responsive after that point.
I have tried
body {
min-height:30%;
min-width:30%;
}
But nothing happens at all.
percentage
The percentage CSS data type represents a percentage value. It
is often used to define a size as relative to an element's parent
object. Numerous properties can use percentages, such as width,
height, margin, padding, and font-size.
use min-height:30vh instead of min-height:30% same goes for min-width:30vw for min-width:30%. But if you want to use % you then have to set the width and height of the parent element
:root{width: 100vw; height: 100vh}
or
html{width: 100vw; height: 100vh}
you are looking for media query my friend. check this out:
https://www.w3schools.com/css/css_rwd_mediaqueries.asp
you'll use a media query to specify the pixel size (and other options) for example 600px max width is a good measurement for phones. inside the query, you'll write regular CSS to apply under those size conditions.
let me know if you need samples, i'll send you some of my code to help.
here is another good post on stack
Media Queries: How to target desktop, tablet and mobile?
I'm trying to build a site with an initial 'landing page' look that you'd then scroll down from to see the rest of the content.
I can easily create a div that will fit the screen on the device I'm currently using, but how can I code for other devices of different screen sizes?
I've tried using '100%' which of course works initially but then continues to fill the screen when you scroll. I've tried defining a specific aspect ratio but again, that will only work for the screen I'm working on.
To be clear, I want the div, or img to fill the screen when a user first lands, then when the user scrolls the div/img should move up with the rest of the page.
I want to achieve this using only HTML or CSS.
Thanks in advance for any tips!
You can use vw and vh on the first <div> to fill the viewport. You can use this for reference: https://developer.mozilla.org/en/docs/Web/CSS/length
This'll do the trick:
.full-page-container {
width: 100vw;
height: 100vh;
}
vw and vh units represent a percentage of the viewport size. Hence 100vh will mean 100% of the viewport height and won't be affected by scrolling.
I am creating a simple portfolio webpage for an photographer. He wants to show his pictures in the web. So the images should be responsive. So I wrote following code to the image class:
img {
max-width: 75%;
height: auto;
}
So it fits the image to the width of any screen, but I want to show the image in full height. So if the image has a bigger height, the user have to scroll down to see the whole image. So how should I set the height, so the whole image whould be shown immediately?
With regards,
Andrej
did you try reversing the same, as in, try giving it a height, and leave the width to auto..!!!
Because u just need to set either of the two, and the other adjusts accordingly...
Simple:
max-height: 100%; /* or a bit less */
But note what the docs say:
The <percentage> is calculated with respect to the height of the containing block. If the height of the containing block is not specified explicitly, the percentage value is treated as none.
Ok, I have found a solution.
I just set the max-height with the vh units (viewport height).
Thx for your help.
try this way: img{max-width:100%; max-height:100%;}