Inspected element and stepped through each element one-by-one until I arrived at the answer for each. How to insert spaces/tabs in text using HTML/CSS? But height is calculated differently. Setting top: 0; bottom: 0; on them will stretch them to the container's height. This value is called content-box. Same as above, by default height of an element is the height of its content. How to Make body height to 100% of the Browser Height ? Secondly, to make the outer-div (in this case #innerPageWrapper) wrap around the child elements, you should use overflow:hidden on this wrapper. How to auto-resize an image to fit a div container using CSS? Why is that? Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? This solution is pretty bulletproof for older browsers and newer browsers alike. Ill put it on the to-do list for updating this article. Launching the CI/CD and R Collectives and community editing features for Wrapper Does not appear fully to the footer, Equalize the height of left and right div, prevent right div from going below left div, Make a div fill the height of the remaining screen space, How to make a div 100% height of the browser window. While I will write an article one day about the troubles and misunderstandings with flexbox, if you need to understand how it works, I highly recommend this (small) bible by CSS Tricks. Child div's height not stretching to 100% of parent div's auto height height: 100% doesn't work for children of container with height: auto. honey child strain. By default, size of a div is calculated according to its content. How to create form validation by using only HTML ? How to set an alternate text for area in HTML5 ? Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). Connect and share knowledge within a single location that is structured and easy to search. If you could create a Codepen to explain the issue we might be able to help further. June 13, 2018, at 10:40 AM. Congrats @Roman! For example, the child may flow out of the parent boundary or it may not get upto 100% height that you will see in your browser output.Example 1: This example makes a child flex-box of height 100% using CSS. How to create footer to stay at the bottom of a Web page. I had the same issue, it worked based on Hakam Fostok's answer, I've created a small example, in some cases it might work without having to add display: flex; and flex-direction: column; on the parent container. Today in this blog post I am going to show you how to create same height as parent height div's. In most of the cases we need to create a div with same height, because if the div has paragraph of unequal length the div will look so wierd which is not good. I might be a bit late to this but I found a work around that might be a bit of a hack. I want height to be 100% of the viewport. Lets see what it computed font size is now in pixels: 38.4px. If it's 100% height the answer is slightly different. How to specify media type of data specified in data attribute in HTML5 ? Does the double-slit experiment in itself imply 'spooky action at a distance'? There are two methods to stretch the div to fit the container using CSS that are discussed below: Method 1: First method is to simply assign 100% width and 100% height to the child div so that it will take all available space of the parent div. I know that if a floated element has its height set to 100%, the parent element needs to have some definition of its own height so the child can be 100% of something concrete. How to specify which form element a label is bound to ? That way, the content's content is to the right of the navigation and you can set the navigation div to be 100% of the content's height. Does With(NoLock) help with query performance? CSS2.1 specs say: The percentage is calculated with respect to the height of the generated box's containing block. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Unless a child is position: absolute or a float, the parent will encompass the child and therefore the child will be 100% of its parents height. It is mandatory to procure user consent prior to running these cookies on your website. If you do want your div to take up the full height relative to the parent container, you can explicitly set it's height in CSS. Another answer to this question is correct in terms of the solution, but the explanation is incorrect. Here is a more complete explanation of how this works: However, a default setting on a flex container is align-items: stretch. Fill remaining vertical space with CSS using display:flex. If set relatively, elements height will be relative to the height of the parent if set. Thus, this remark belongs to a comment below his answer! I tried it and it worked but Im just curious. Instead of max-height: 250px you should . Make a div horizontally scrollable using CSS. Here we are gonna discuss one of those rules: Default behavior is that a child element's margin does not affect the height of its parent. You can specify 100% to html and body elements as @Travis stated earlier to have the page height cascade down to your nodes. Em is a unit derived from parents font size. So, when you don't specify an explicit height on the parent, then there's no base height for the child's max-height to be calculated from, so max-height computes to none, allowing the child to be as tall as possible. For this to successfully work, your child elements must not be position:absolute as you have for #contentMain and #contentSidebar, instead make these floats (float:left and float:right) and after the #contentSidebar div closes, add a to clear floats, allowing the parent to wrap around them perfectly. Simply putting the parent's height on auto! This was the same answer I provided to this Question. In our example, we have a parent element with two floated child elements. I use it now instead of floating divs around. I have also tried to say the the div child have an absolute position (left:0px;top:0px;bottom:0px;) but then text from the parent div gets over it. To learn more, see our tips on writing great answers. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? You can also set dynamic width and height on child elements. After long searching and try, nothing solved my problem except. Let's see what it computed font size is now in pixels: 38.4px. How to float three div side by side using CSS? I have a site with the following structure: The navigation is on the left and the content div is on the right. That is why relative values of height usually dont work because certain conditions must be met beforehand. If the height of the containing block is not specified explicitly (i.e., it depends on content height), and this element is not absolutely positioned, the value computes to 'auto'. The only exception is the root element , which can be a percentage height. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Add min-height to child2 nd then set it up. How to make flexbox children 100% height of their parent using CSS? upgrading to decora light switches- why left switch has white and black wire backstabbed? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. For the child element, we set the position to absolute. Why was the nose gear of Concorde located so far aft? For example, the child may flow out of the parent boundary or it may not get upto 100% height that you will see in your browser output. How to force child div to be 100% of parent div's height without specifying parent's height? Is there a way to make a child DIV's width wider than the parent DIV using CSS? computes to auto. Quick Demo (shows the concept, you might need to tweak it). to the initial containing block. Sounds easy so far? Why did the Soviets not shoot down US spy satellites during the Cold War? Parent div not expanding to children's height (2) . In some cases, the best solution might be to use flexbox, as follows: html, body { height: 100% ; } body { display: flex; } .height { background: lightblue; flex-grow: 1 ; } Code language: CSS (css) As you can see, box-sizing: border-box; isn't required. Thanks for contributing an answer to Stack Overflow! How to set minimum and maximum value of range in HTML5 . How to link back out of a folder using the a-href tag? Asking for help, clarification, or responding to other answers. Therefore, remove height: 100% so align-items: stretch can work. So perhaps you are missing something. When we float elements with CSS, what were doing is taking those elements out of the normal flow of the page. Set position: relative on your container and position the children absolutely. I suggest you take a look at Equal Height Columns with Cross-Browser CSS and No Hacks. height and width. I am guessing it is about Dmitry's code. CJ! Brilliant! You can use the vh unit to get a viewport height without an unbroken chain of parents containing height values (as Sam mentioned). So make the div of same height we will refer the following code. For the parent element, add the following properties: Find more detailed results with CSS examples here and more information about equal height columns here. This usually causes some troubled with fluid layout. How did Dominion legally obtain text messages from Fox News hosts? Is email scraping still a thing for spammers. In case someone is struggling to work with square divs that are also flex containers in Firefox or Edge, just remember to set the :before element to display: table. Based on the method described in this article I have created .Less dynamic solution: I know it's been a looong time since the question was made, but I found an easy solution and thought someone could use it (sorry about the poor english). How to set multiple media resources for elements in HTML5 ? Can a VGA monitor be connected to parallel port? How to set the number of rows a table cell should span in HTML ? In other words, the parent elements I need to add that as another method. height at all unless the content is so long that it goes outside of Necessary cookies are absolutely essential for the website to function properly. block is not specified explicitly (i.e., it depends on content How can a