centering | 易学教程

Vertically center two elements within a div

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问题 I am trying to vertically center two <p> elements. I followed the tutorial at phrogz.net but still the elements get placed above the div, below the div, top-aligned within the div. I would try something else but most of the questions here just point back to that tutorial. This snippet is for a banner that is on the top of a web page. .banner { width: 980px; height: 69px; background-image: url(../images/nav-bg.jpg); background-repeat: no-repeat; /* color: #ffffff; */ } .bannerleft { float:

Best way to center a <div> on a page vertically and horizontally? [duplicate]

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问题 This question already has answers here : How to center an element horizontally and vertically (19 answers) Closed 11 months ago . Best way to center a <div> element on a page both vertically and horizontally? I know that margin-left: auto; margin-right: auto; will center on the horizontal, but what is the best way to do it vertically, too? 回答1: The best and most flexible way My demo on dabblet.com The main trick in this demo is that in the normal flow of elements going from top to bottom, so

Center a column using Twitter Bootstrap 3

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问题 How do I center a div of one column size within the container (12 columns) in Twitter Bootstrap 3? .centered { background-color: red; } <body class=\"container\"> <div class=\"col-lg-1 col-offset-6 centered\"> <img data-src=\"holder.js/100x100\" alt=\"\" /> </div> </body> I want a div , with a class .centered to be centered within the container. I may use a row if there are multiple div s, but for now I just want a div with the size of one column centered within the container (12 columns). I

Centering in CSS Grid

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问题 I\'m trying to create a simple page with CSS Grid. What I\'m failing to do is center the text from the HTML to the respective grid cells. I\'ve tried placing content in separate div s both inside and outside of the left_bg and right_bg selectors and playing with some of the CSS properties to no avail. How do I do this? html, body { margin: 0; padding: 0; } .container { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 100vh; grid-gap: 0px 0px; } .left_bg { display: subgrid;

Why is a flex item limited to parent size?

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问题 Considering the following example... body { margin: 0; } * { box-sizing: border-box; } .parent { min-height: 100vh; width: 50vw; margin: 0 auto; border: 1px solid red; display: flex; align-items: center; justify-content: center; } .child { border: 1px solid blue; width: 150%; } <div class=\"parent\"> <div class=\"child\"> <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Amet tellus cras adipiscing enim eu turpis.

How to center a “position: absolute” element

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问题 I\'m having a problem centering an element that has the attribute position set to absolute . Does anyone know why the images are not centered? body { text-align: center; } #slideshowWrapper { margin-top: 50px; text-align: center; } ul#slideshow { list-style: none; position: relative; margin: auto; } ul#slideshow li { position: absolute; } ul#slideshow li img { border: 1px solid #ccc; padding: 4px; height: 450px; } <body> <div id=\"slideshowWrapper\"> <ul id=\"slideshow\"> <li><img src=\"img

Bootstrap 4 Center Vertical and Horizontal Alignment

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问题 I have a page where only form exists and I want form to be placed in the center of the screen. <div class=\"container\"> <div class=\"row justify-content-center align-items-center\"> <form> <div class=\"form-group\"> <label for=\"formGroupExampleInput\">Example label</label> <input type=\"text\" class=\"form-control\" id=\"formGroupExampleInput\" placeholder=\"Example input\"> </div> <div class=\"form-group\"> <label for=\"formGroupExampleInput2\">Another label</label> <input type=\"text\"

How to vertically center a div for all browsers?

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问题 I want to center a div vertically with CSS. I don\'t want tables or JavaScript, but only pure CSS. I found some solutions, but all of them are missing Internet Explorer 6 support. <body> <div>Div to be aligned vertically</div> </body> How can I center a div vertically in all major browsers, including Internet Explorer 6? 回答1: Below is the best all-around solution I could build to vertically and horizontally center a fixed-width, flexible height content box. It was tested and working for

How to horizontally center a <div>

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问题 How can I horizontally center a <div> within another <div> using CSS? <div id=\"outer\"> <div id=\"inner\">Foo foo</div> </div> 回答1: You can apply this CSS to the inner <div> : #inner { width: 50%; margin: 0 auto; } Of course, you don't have to set the width to 50% . Any width less than the containing <div> will work. The margin: 0 auto is what does the actual centering. If you are targeting IE8+, it might be better to have this instead: #inner { display: table; margin: 0 auto; } It will make