css3 | 易学教程

Hide a DIV which has no class/id

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问题 Is it possible to hide a div with no class/id via css, or javascript? There is a possibility another div like this to be in the page. <div align="center">text here</div> Actually, it is an ebay listing template, and the software that will be used adds this div at the bottom with javascript and flash gallery in it and I that is why I want to hide that thing. The div is between 2 comments:  <div align="center">text here</div>  Can these

how to trigger css transition before hover

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问题 So, I made sidebar hidden and shows up when on mouse hover. My question is how to trigger the css transition before the mouse hover on the sidebar, just like in this sidebar link: https://la24.org/vision . how I do that? many thanks 回答1: There are two ways doing it. Javascript - Just toggle expanded class whenever needed. Pure CSS - Sideabar Wrapper and Sidebar element In this case you can trigger your .sidebar animation on .sidebar-wrapper hover: .sidebar-wrapper:hover > .sidebar{ **Your

I can't verticaly align an element to bottom

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问题 I'm trying to get my fullcalendar.io event to show up at the bottom of the day instead of in the middle. I've been trying to modify different elements to vertical-align: "bottom" but nothing seems to work. Here is a link to my fiddle that has different css overloaded calls to set the vertical-alignment to bottom for a calendar event. Currently the event is placed in the middle of the day, I want it at the bottom of the cell. $(document).ready(function() { // page is now ready, initialize the

CSS Grid - how to have 2, 3, 4, 5, or 6 columns

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问题 I'm trying to figure out how I could use CSS grid for some asymmetric layouts like this: <h3>Two-Fifths - Three-Fifths</h3> <div class="cols"> <div class="two-fifths"> <p>This is an example of a WordPress post, you could edit this to put information about yourself or your site so readers know where you are coming from. You can create as many posts as you like in order to share with your readers what is on your mind.</p> </div> <div class="three-fifths"> <p>This is an example of a WordPress

Background Seams on Mobile Devices

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问题 Not sure what’s happening, but I seem to have an issue with my background seemingly repeating vertically when view from a mobile device OR if you shrink the browser to activate the responsive nature of the site. My Portfolio Website Can anyone give me a hint as to what’s going on here??? 回答1: It's all because height: 100%; In this case alway when you have vertical scroll this will look like this. So I prefer background attachment, and it should work: background-attachment:fixed; 来源： https:/

CSS Transition hover effect for touch devices

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问题 I'm trying to get a hover/ touch effect when I tap a button using CSS. I have used the below CSS transition to change the background, but it doesn't seem to work: https://jsfiddle.net/s3vbgos7/ HTML <div role="button" class="ico-btn red"></div> CSS .ico-btn { -webkit-user-select: none; margin-right: 0px; -webkit-box-shadow: rgba(0, 0, 0, 0.298039) 0px 2px 10px 0px, rgba(0, 0, 0, 0.0980392) 0px 0px 1px 0px, rgba(255, 255, 255, 0.247059) 0px 1px 0px 0px inset, rgba(0, 0, 0, 0.14902) 0px -1px

Flexbox column cropping image (on iOS only)

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问题 1) I have been developing a site using flexbox CSS styling to control the site layout. I have been using the FLA Framework to write this site - same as facebook.design. Firebug and Chrome Inspector show no issues with the layout of the code, however on mobile iOS Safari and Chrome, the images are cropping when the flexbox order is being used. (as far as I can tell). Steps I have taken to resolve this are to add the -webkit-order: x; to the stylesheet however this has no effect. The website

Cannot get parent element using jQuery

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问题 I have the following html structure created dynamically by foreach loop and tried to remove the whole element by accessing it from (ACTIVE HYPERLINK). I tried many different way, but cannot reach to it. As the whole block (of ACTIVE HYPERLINK) is repeated, I think it is meaningless to use class name of the hyperlink. I also tried to use a.active but not seem to work. @foreach (var file in Model.FileAttachments) { <li class="aaa"> <div class="bbb"> <div class="ccc"> <div class="ddd"> <div

分享10款漂亮实用的CSS3按钮

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 昨天向大家介绍了一些精美的菜单《分享简单而实用的网页菜单导航》。这次主要给大家分享10款风格各异的CSS3按钮，如果你希望你的页面也能有很炫的样式，那么我相信这10款CSS3按钮就非常适合你，而且每一款都整理了源代码供参考，一起来看看吧。 1、绚丽的CSS3发光按钮特效这是用纯CSS3实现的一组按钮特效，这组按钮不仅色彩绚丽，更重要的是如果在chrome或者safari浏览器中还能呈现出闪闪发光的特效，非常酷的一组按钮。 2、另类风格的CSS3按钮特效这组CSS3按钮比较特别，整体上来看，这组CSS3按钮给人的感觉是非常有爱非常萌。按钮上都会有一个小图标，而这个小图标是由data-icon属性实现的。 3、 CSS3带气泡动画特效的按钮这是一个用CSS3实现的带有气泡动画特效的按钮。当你把鼠标移入或者移出按钮时，按钮中就会出现气泡流动的动画特效。 4、 CSS3按钮Super Awesome Buttons 这又是一款用纯CSS3实现的漂亮的按钮，这组按钮和之前介绍的 CSS3发光按钮外观上差不多，就是少了发光的特效。 5、 10个非常漂亮的CSS3按钮下面给大家分享10个简单而漂亮的CSS3按钮，这10个CSS3按钮拥有不同的色彩，你可以选择其中一个适合你的按钮放在自己的网页上。 6、

css transition only working in Firefox

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问题 I'm trying to use CSS transitions to make a background image fade in on my menu when you hover over it. I want it to take about 2 seconds to fade it. It works perfectly in Firefox but all on other browsers it just appears instantly. In IE it doesn't work at all but I'm not worried about that since I never expected it to work. CSS LAYOUT .mainmenu ul li{ height: 86px; display: inline-block; margin: 0; padding: 0; z-index:1000; position: relative; } .mainmenu li:after{ content: ""; opacity: 0;