css

问题 When using GTMetrix, the following CSS yields "Properly size images" and Google's Web.dev doesn't display "Displays images with incorrect aspect ratio" figure.dhero { position: relative; } figure.dhero::after { content: ''; display: block; overflow: hidden; height: 0; width: 100%; padding-bottom: 66.5492958%; } figure.dhero > * { position: absolute; top: 0; left: 0; max-width:100%; min-width:100px; min-height:100px; display: block; z-index: 2; } In contrast, GT Metrix doesn't display the

问题 I am creating a multi-select dropdown using bootstrap this is the html : <form id="multiselectForm" method="post" class="form-horizontal"> <div class="form-group"> <label class="col-xs-3 control-label">Browser</label> <div class="col-xs-5"> <select class="form-control" name="browsers" multiple="multiple"> <option value="chrome">Google Chrome</option> <option value="firefox">Firefox</option> <option value="ie">IE</option> <option value="safari">Safari</option> <option value="opera">Opera<

问题 I have many table, want to set css style on first row of the table on case first row has rowspan. <table> <tbody> <tr> <td rowspan="2" width="110">Name</td> <td width="110">Size</td> <td width="110">Status</td> </tr> <tr> <td>Meter</td> <td>true/false</td> </tr> <tr> <td>Code A</td> <td>1</td> <td>false</td> </tr> </tbody> </table> With this style I tried to change first row: thead tr:first-child, tbody tr:first-child { background-color: #1DA6C0;color: #fff; } So I looking for a css style to

问题 Bootstrap class dropdown-menu can autodetect the viewport of the screen and adapt accordingly So if there is no room for the dropdown to open to the bottom it opens up, as shown by the example bellow However it doesn't happen for the horizontal limits of the viewport, and I end up getting this horizontal scroll, here's an example of this happening: <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs

问题 This question already has answers here : Can we set style to title tag in header (6 answers) Closed 4 years ago . Can't find the answer anywhere, is there a way to edit the <title>exampletext</title> using css to give it for example a 'bold' weight or color: red? 回答1: No, but in js you can edit or modify title itself but no way to apply css sorry <script type="text/javascript"> $(document).ready(function() { document.title = 'new title'; }); </script> however you can do something like head {

问题 This question already has answers here : Can we set style to title tag in header (6 answers) Closed 4 years ago . Can't find the answer anywhere, is there a way to edit the <title>exampletext</title> using css to give it for example a 'bold' weight or color: red? 回答1: No, but in js you can edit or modify title itself but no way to apply css sorry <script type="text/javascript"> $(document).ready(function() { document.title = 'new title'; }); </script> however you can do something like head {

问题 This question already has answers here : Can we set style to title tag in header (6 answers) Closed 4 years ago . Can't find the answer anywhere, is there a way to edit the <title>exampletext</title> using css to give it for example a 'bold' weight or color: red? 回答1: No, but in js you can edit or modify title itself but no way to apply css sorry <script type="text/javascript"> $(document).ready(function() { document.title = 'new title'; }); </script> however you can do something like head {

问题 I have the following code: $('button').click(function() { $('#parent').append('<div>element</div>'); }); #parent { height: 200px; width: 100px; border: 1px solid #ccc; } <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="parent"></div> <button> Add </button> https://jsfiddle.net/8ybnycxv/1/ When the button is clicked, I want to append a div element to the #parent . However, if there is no element in the #parent yet, elements will be added

问题 In the Fiddle link , you can see image with some content. What I want is .g_container li strong should get truncated with dynamic width but now its getting hidden. Its width should stop spreading with image width. now I gets hidden and (3 dots) ... were not visible even if I use text-overflow:ellipsis .g_container li strong { text-align: center; font-size: 13px; font-weight: bold; padding: 8px 10px 4px !important; line-height: 30px; color: #000; text-transform: uppercase; height: 30px;

问题 I've a CSS string like #xyz{ color:#ee2ee2; } .abc{ background-color:#FFFFFF; border-color:1px solid #eee; } .def #xyz{ border-color:1px solid #ddd; } I need to replace the #xyz (or any other ID selector) with .xyz without changing the color: #ee2ee2 (or any other color selector). Basic java-script code would do I've tried some regex but it fails a few cases cssText.replace(/#([a-zA-Z])/gm, '.$1'); 回答1: This will replace # with . only when there is a { somewhere after in the same line.