css3

问题 I expect my page to be similar to Yahoo my expected result and the code are as following. I have tried different method but does not work. It should be in the middle and has the following sections. Expected result 50% |LeftHeader middleHeader RightHeade| 50% 50% | 50% Menu1 Menu2 Menu3 50% | 50% 50% |Content goes here ***********************************************| 50% |*****************************************************************| 50% | 50% text of Footer goes here 50% | 50% These lines

问题 Below is the CSS FLexbox layout I am working on. A live example is here as well as on this CodePen which is constantly updated: http://codepen.io/jasondavis/pen/OWbXNB?editors=1100 I need to add 2 DIV's to the layout and need help getting them positioned where I need them. Add a header DIV above the right content panel Add a Form Footer DIV like the current wrapper Footer with save and reset buttons along with saving indicator at the bottom of the Right Sidebar Lastly I need to remove the

问题 Below is the CSS FLexbox layout I am working on. A live example is here as well as on this CodePen which is constantly updated: http://codepen.io/jasondavis/pen/OWbXNB?editors=1100 I need to add 2 DIV's to the layout and need help getting them positioned where I need them. Add a header DIV above the right content panel Add a Form Footer DIV like the current wrapper Footer with save and reset buttons along with saving indicator at the bottom of the Right Sidebar Lastly I need to remove the

问题 Can anyone tel me how I would make a shape like this in CSS, with the triangle centered top or bottom like I want it ? Edit: With one element. 回答1: @harry; there are lot of ways to create this type of triangles arrows. I edit @jam fiddle & center the arrows. CSS: div { background: #76a7dc; padding: 10px; display: inline; position:relative; } div:after { border-color: #76a7dc transparent; border-style: solid; border-width: 10px 10px 0; content: ""; margin-top: 5px; display: block; position:

问题 I have a webpage with a background image and a form which i have placed at the center of this webpage. For background size to be working in ie 8 i have used background-size.htc polyfill My requirement is background image should move with form content flow , that means when error messages appears below each input field the height of the form will increase that should also increase the height of the background image ,it should be relative to the bg image.Currently,its working in all browsers

问题 There is more code to each function, but these are the main lines that matter in regards to my question I believe...This is from a guys library to desaturate an image on rollover basically. How do I change it to on click, rather than on mouseover / rollover? Here's his code... jQuery(function($){ $cloned.closest(".DesaturateDiv").bind("mouseenter mouseleave",desevent); } function desevent(event) { if (event.type == 'mouseenter') $(".des.color", this).fadeOut(275); if (event.type ==

问题 I'm trying to do the next: html > body > div-wrapper > div-left, div-separator, div-content The three div will have the same height If they are empty ( or no overflow), the height will be the 100% of the page (without scrolls). If some of they overflows, I will have only 1 scroll that scrolls down/up the three divs at the same time (scrolling the wrapper i think). It's this possible? I spent 7 hours thinking about it but I can't solve only with HTML + CSS (without using flexbox). Thanks, 回答1:

问题 When you see the fiddle you will see that the animation is somehow jumpy. It should got from left to right to 100% width and then squeeze back to 0% width on the right side. How to fix that? http://jsfiddle.net/j44gbwna/ div:after { content: ""; height: 3px; background: red; position: absolute; animation: loader 2s; -webkit-animation: loader 2s; animation-iteration-count: infinite; -webkit-animation-iteration-count: infinite; transition-timing-function: linear; -webkit-transition-timing

问题 I try setting up a CSS grid layout as follows .wrapper { width: 800px; display: grid; grid-template-columns: repeat(3, 200px); grid-template-rows: repeat(5, 200px); } Is it possible to locate grid-template-columns in JS then re-size the columns? I came across a situation where I could find it (lost the code) but when I tried changing it, Chrome DevTools say the value is computed and cannot be changed. Any help pointing me in the right direction (or other ways to do it, but use of grid is a

问题 Using the CSS ::before tag, I am trying to use the FontAwesome PDF icon to show up an HTML page. FontAwesome's cheat sheet says to use use this Unicode fa-file-pdf-o [] So, I removed the "&#x" and replaced it with the backslash "\", but it didn't work. .pdf-icon li ::before { content: "\f1c1"; } Only an icon placeholder displays, but not the PDF icon. The directions on that page, says to "use on the desktop, install FontAwesome.otf, set it as the font in your application..." Here's a link to