Content of website is Centralise in HTML Bootstrap - html

There are many website's content are centralize.
I guess they use container or some custom container class to proceed that.
But is there any standard about that?
1440px, 1010px, 760px of those container is some standard?
Why they have to do that, is it for better looking or have another purpose?
Thanks
ps I am a beginner of html,css,php sorry about that :)

You may define your own css like
.container {
margin: 0 auto;
width: 40%;
}

Related

How to implement a BorderLayout in HTML/CSS using flexbox properly?

Please find here a HTML snippet and the corresponding CSS which build a BorderLayout:
https://jsbin.com/zokutalafe/edit?html,css,output
-
The yellow area in that BorderLayout example shall have a height of 100%, unfortunatelly it has not :-(
The question is now: Is it possible to change that yellow container's height to 100% by just modifying the CSS, NOT(!) the HTML, without using new [Edit: I mean "additional"] CSS selectors (means: something like ".borderlayout-center > div { height: 100% }" is not allowed)???
This is for a very special use case - that's why I have the above mentioned strange constraints.
Thanks a lot in advance.
You can use like below:
.borderlayout-center div {
height: 100%;
}
I'm not shure what you mean with new CSS selectors
But something like
.borderlayout-center div{
height: 100%;
}
it's nothing new and it works...

How to implement simple layout: header - sidebar - content

I'm looking for a simple, effective and modern way to implement the following layout for a website:
- header: 100% width
- below header
- sidebar with fixed width
- content area that fills up till 100%
I've found a good example here, but this is all based on 'em' sizing, we have quite some backgroundpixels so we rather need an example with 'px'.
We thought that we could switch easily to 'px' in that specific example, but apparently it's not that easy to get this perfect.
Thanks in advance for all the tips!
You can use flex to have a sidebar on the left with a fixed width whereas the content on the right takes up the remaining space. Be aware that flex was added with CSS3 and older versions of Internet explorer may not support it (http://caniuse.com/#search=flex)
.contentContainer {
display:flex;
flex-direction: row;
}
.left {
background-color: #ffaa00;
min-width:200px;
}
.right {
background-color: #00aaaa;
flex:1;
}
https://jsfiddle.net/nrv5p70q/1/
However some simple googling could have solved the issue too. You may want to check this cheat sheet:
https://css-tricks.com/snippets/css/a-guide-to-flexbox/
The example you are using will allow you to achieve this.
You can use a em to px conversion to convert the values from em to px. Once you have the correct values you can replace them in the css. Thus.
#nav {
margin-left: -352px; //was -22em
margin-left: expression((-(document.getElementById("wrapper").clientWidth))+"px");
left: 208px; //was 13em;
}
Using this method will allow you to continuing w3schools tutorial which is a great way to get up to speed with html and css.

Is it possible to add conditional properties to CSS using foundation 4 or bootstrap?

An example of what I mean:
I have an image inside a div that I want to be left-aligned when the viewport is large (and it is side by side with another image that is inside another div, each one taking 6 columns) and to be centered when it is small (as it is going to occupy all columns). I would like to know if it is possible and how, using foundation or bootstrap. Do we need to use media-queries?
Sorry, but I didn't understand yet if that's something you use with CSS or if you need to use LESS.
Thank you, I hope you can help me understanding how this works in frameworks.
I'd say using media queries is your best bet, for your specific example it would be as follows
#media (max-width:[SMALL SIZE]) {
.divClass img{
margin-left: auto;
margin-right: auto;
}
}
#media (max-width:[LARGE SIZE]) {
.divClass img{
float: left;
}
}

How to access the screen size in html?

Is it possible?
You can do this with javascript using window.screen. See here.
no. but you can create layouts that depends not on pixels or cm, but percentages. they are called liquid layouts. also you can define a minimun width or height to be sure your layout won't broke in minnor screens.
other alternatives includes client side scripting (like javascript) as already said by the others.
Just in case you're asking to center something onto the screen/browser window:
Use CSS:
.cen {
margin: auto;
}
and in case it is a picture you want to center:
.cen {
position: absolute;
left: 50%;
top: 50%;
margin-left: -<witdh of image>/2;
margin-top: -<height of image>/2;
}
Another great way to do this is using #media queries.
A brief overview can be found here; http://www.css3.info/preview/media-queries/
Or a more thorough explanation from the W3C; http://www.w3.org/TR/css3-mediaqueries/
This may not be the best option if you're worried about a lack of support on older browsers, but if you're not, this is the best way to go!
Not in HTML, but in JavaScript.
window.screen has width and height properties.

Need CSS sidebar height to expand with content

I have a two column layout, with a gray sidebar on the right. I need the sidebar's height to expand when the height of the left column is increased (due to content being dynamically expanded). I can make the sidebar fit a static page, but I cannot get it to increase in size with the rest of the page. Did some Googling, but couldn't find a work-around that worked for me.
Does anyone know how to do this?
This is a common problem when using DIVS for this type of layout.
If you google 'Faux column' you should get some answers.
eg. http://www.alistapart.com/articles/fauxcolumns/
This may be slightly off but if you use jQuery on your site you can perform a quick calculation and resize all DIVs sharing a similar class to the maximum height:
$('.elements').height(Math.max($('#div1').height(), $('#div2').height()));
I have been haunted by this problem for a while and I wrote an article about this issue: Done with faux columns. Here is what I argued:
JavaScript based solution for this
problem is not worse than any other
solution. In fact if you are using
JavaScript, you may save a few hours
of frustration of trying to get things
working. People will warn you against
this by saying “What will happen if
the user turned off JavaScript?“.
Believe me, if the user has turned off
JavaScript, most of the web is broken
for him anyway. Your sidebar does not
matter to him.
As cballou mentioned, the simplest way to do this thing is to use JQuery code:
$(".sidebar").height(Math.max($(".content").height(),$(".sidebar").height()));
I changed the background-color to the same color as my sidebar, on that specific page, although I do have backgrounds for all my sections rather than one overall background. But that might not work for everyone.
In my stylesheet,
.sidec
{
background-color:#123456;
}
In my HTML page,
<body class="sidec">
content....
</body>
I recently saw a quite creative solution to this problem using the CSS properties position:absolute and border.
Definitely worth checking out to see if it works for you.
Link: http://woorkup.com/2009/10/11/really-simple-css-trick-for-equal-height-columns/
I'm not sure if this will help, as I'm a newbie. However, when struggling with getting my sidebar to show the whole content when I doubled it's size I did the following. I was changing my height and width with no response until I changed the class. My class was listed SB frame SB width. So when I changed my class to read SB height SB width it fit to my content instead of the original frame size. I also tried SB max sb width with worked too, but it took out my footer menu bar (meaning it wouldn't show it anymore). I went back to SB height SB width, and all is well. That's super duper elementary for all of you I'm sure, but just in case there is another newbie reading this that doesn't understand much about html code like myself... I hope this helps =)
Happy Holidays Everyone!
hugs, tara
I'm guessing you want to apply certain effect to your layout such that it will require both columns to resize together. If you want to dynamically change the values of the height of the columns, I doubt it will work simply with css unless you implement some javascript to control the style.
As Dal suggested, do look at the link on faux columns. As the name suggests, the solution isn't much about modifying the columns height. Instead, it gives the "illusion" that both columns appear to be of the same height when in reality they are not -- and is with the use of tiles of background image.
The idea is there isn't a need to complicate the mark-up. Simple structure with a touch of "illusion" with images is a common practice in web design.
Regards,
Jonah
With the poor attitude towards new members on here I expect to be barracked for this answer, here goes.
I got around this problem by creating a background image 960px wide 1px high with the two colors I needed for the columns in their respective widths (780px and 180px). I then used this as the background image for my container repeated on the y axis and made the content and the right sidebar background-color: transparent.
.container {
width: 960px;
background-color: #FFFFFF;
margin: 0 auto;
background-image: url(../images/bgs/conbg.jpg);
background-repeat: repeat-y;
}
.sidebar1 {
float: right;
width: 180px;
height:auto;
background-color:transparent;
padding-bottom: 10px;
}
.content {
padding: 10px 0;
width: 780px;
background-color:transparent;
float: right;
}
I am sure that this method has its limitations but it works perfectly on all my pages.
It is possible that I have not explained this very well, if so, be nice about it will you please. I will endevour to expand on my method(which is probably already common knowledge).