centering ruler

CSS for horizontal vertical center alignment Horizontal centering in CSS is easier. Commonly, if you want to implement inline elements or inline-block elements horizontally, you can set the implementation on their parent block-level elements, or text-align: center if you want to align the horizontal centers of block-level elements magin: auto . And if you want to align vertically, it might not be easy. Below, I've summed up some of the ways to achieve

One, single-line text vertical center:The height of the line whose text is set is equal to the line-height of its parent container. Such asAs followsSecond, the positioning of the box to achieve vertical centering method one: The sub-box absolute positioning after setting its height, margin:auto, and top, right, left, bottom are 0.As follows:Method Two: Let its sub-box absolute positioning after the top:50%,margin-top:-itself half px height, the level

It is a very common requirement to set the horizontal vertical centering of elements in CSS. But it is such a theory that seems to be very simple to achieve, in practice, it often baffled a lot of people.It is relatively simple to center an element horizontally: if it is an inline element, it is applied to its parent element text-align: center , and if it is a block-level element, it is applied to itself margin: auto .However, if you want to center an

1. Use Inline-block and vertical-align to achieve centering : This method is suitable for the case of unknown width height. Reference: https://css-tricks.com/centering-in-the-unknown/2. Use relative absolute positioning and negative margins to center up or down : height and width known In fact, the second to understand can not, first relative to the parent element top,left positioning in 50% position, t

This article for you to organize four kinds of CSS to achieve vertical center effect, the idea is very good, with reference value, need to refer to the friend Row height Line-height for vertical centering of single-line text It used to be that single-line text is centered vertically to set the height and row heights to the same value, but the height is not necessarily set. In fact, the text itself is centered on one line. When the height is not set,

Http://www.w3cplus.com/css/vertically-center-content-with-cssCSS Production horizontal Vertical center alignment (the method of horizontal and vertical centering, respectively, analysis of pros and cons)Http://www.cnblogs.com/rubylouvre/p/3274273.htmlCSS Center (more comprehensive centering method)http://www.zhangxinxu.com/wordpress/?p=3794Zhang: Margin:auto to achieve horizontal vertical

In general, it is relatively simple to horizontally center a fixed-width block element, and we only need to set the width of the block element and set margin:0 Auto. However, for block elements that cannot be set to a fixed width, this trick does not work.Let me introduce the three commonly used methods to set the horizontal center of an indefinite wide block element.First: horizontal centering with float+relativeCSS code:. Wrap { float: left; positio

We all know margin:0 auto; Style allows the element to be centered horizontally while margin:auto; But not vertically centered ... Until now. However, please note! To make the element absolutely centered, just declare the height of the element and append the following styles to do it: . absolute-center { margin:auto; Position:absolute; top:0; left:0; bottom:0; right:0;} I'm not the first person to find out about this approach (but I dare call it "fully centered"), which can be a very common

About CSS centering that little thingPreface: How to Say? I had only known margin:0 auto; Never thought it would be so advanced, since the study of MU class network, I realized that the original CSS center is a lot of learning.First, classificationFirst of all, the classification.Classification refers to what elements are centered, and different elements correspond to different methods.1. Inline elementsWhat is the inline element? The previous blog po

1. Absolute centering (Absolute centering) technologyWe often use margin:0 auto, to achieve horizontal center, and always think Margin:auto; not vertical center ... In fact, implementing vertical centering requires only declaring the element height and the following CSS:. absolute-center { margin:auto; Position:absolute; Left: 0; right:0; Top: 0;

Horizontal Centering method1. Center element in lineInline element centering is only for inline elements, such as text, Picture (IMG), buttons, and other inline elements, which can be implemented by setting Text-align:center to the parent element. Also, this method can be used if the block element property display is set to inline. But the first condition is that the child element must not be affected by fl

CSS Text Vertical centering problemProblem: Center text in div: when using line-height:100%%; , the text is not centered, as follows:HTML: CSS: #header_logo_des { width:100%; height:100%; font-size:28px; Text-align:center; line-height:100%; /* Set Line-height to be equal to the height of the parent element, cannot use%;*/}But the results are as follows:Reason:The Line-height property sets the distance between lines (row height) 1. cann

want to make the contentIf the edges and wrap coincide, you must set the top:-80%, so if we set Subwrap's top:50%, we must use 100% to get the content back to its original position., but what if we set the content to 50%? So it's just vertically centered. So we can use this method to achieve vertical centering in Internet Explorer 6:Div#wrap {border:1px solid #FF0099;Background-color: #FFCCFF;width:760px;height:400px;position:relative;}Div#subwrap {P

One. Center horizontallyIn-line elements and block-level elements are different, for inline elements, simply set the text-align=center in the parent element;There are several centering methods for block-level elements:1. Place the element in the table, and then set the table's Margin-left and margin-right to auto, centering the table so that the block-level element leaf is centered in it, but this method do

1. Relative positioning(1) using Text-align:center in the parent element;(2) using Margin:auto;2. Absolute positioning(1) Centering by setting Left,top offset and negative marginWidth:[width]; Height:[height];Position:absolute;left:50% top:50px;Margin-left:-[width];Margin-top:-[height];(2) Implementation via offset and CSS displacement (CSS3 version)Position:absolute; left:50%; top:50%;Transform:translate (-50%,-50%);(3) Automatic

This time to bring you fit-content to achieve the element level center, fit-content to achieve the elements of the level of attention to the center of the matter, the following is the actual case, together to see. When we let a module horizontal center The first thought is certainly margin:0 auto; So today to introduce a fit-content attribute, do not know if there are students have used, if used so you can skip this article, the students have no use to continue, I also see this property for the

Horizontally centering an element in CSS is very simple: if it is an inline element, apply text-align:center to its parent element, and if it is a block-level element, apply margin:auto to it itself. However, if you want to center an element vertically, you may feel numb just by thinking about it. Over the years, vertical centering has become the holy grail of CSS, and it is also a popular joke in the front

not appear in the page immediately, but if the content in theWhen the line is relative to the location, the 100%-point ratio you use will no longer be the content's original height. For example, we set Subwrap's position to 40%, and if we want to make the contentIf the edges and wrap coincide, you must set the top:-80%, so if we set Subwrap's top:50%, we must use 100% to get the content back to its original position., but what if we set the content to 50%? So it's just vertically centered. So w

the loose or strict does not affect.This notation also applies to image IMG and some other box-like tags in the CSS center.Finally, if you look different in IE and Firefox two browsers, you'd better use text-align:center; A method that is set with the margin two CSS centered. For example:#layout {text-align:center;}#center {Margin-right:auto; Margin-left:auto; }Description: The text-align:center is defined first in the parent element, which means that the content within the parent element is ce

:-80%, so if we set Subwrap's top:50%, we must use 100% to get the content back to its original position., but what if we set the content to 50%? So it's just vertically centered. So we can use this method to achieve vertical centering in Internet Explorer 6:Div#wrap {border:1px solid #FF0099;width:760px;height:400px;position:relative;}Div#subwrap {Position:absolute;border:1px solid #000;top:50%;}div#content {border:1px solid #000;position:relative;to