centering ruler

Horizontal centering is one of several common layout methods. It is mainly divided into the center of the inner Element and the center of the block element. The center of the Block element is also divided into a fixed-width center, indeterminate width. The center of the inline element, which can be implemented using Text-align:center, is centered on the block element of the known width, using absolute positioning and setting Margin is a negative val

In style layouts, we often encounter the need to center elements. The horizontal centering of elements through CSS is simple: for text, you only need to set text-align:center for its parent element, and for block-level elements such as p, you only need to set its left and right margin values to auto. To implement the vertical centering of an element, one might think of the Vertical-align property in CSS, bu

This article mainly for you to share the CSS vertical horizontal center of the 5 best solutions and their respective advantages and disadvantages, the introduction of very detailed, with reference value, need to refer to the friend, hope to help everyone. CSS Center Alignment The browser prefix is omitted from the code The following examples are sorted by my personal criteria Of course there are more centering methods but I think only the

Today through this article to introduce a Fit-content property of the relevant knowledge, CSS properties are used to center horizontally, Fit-content is CSS3 to the width property of a new attribute value, which with margin can let us easily achieve horizontal center effect; Let's see the code together. 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 ca

Roughly sort the vertical centering problem in CSSMainly divided into two major categories1 know the size of the block element, generally refers to know the height of the element.Method One: The simplest, the analogy horizontal center.Idea: The child element is set to absolute; Top bottom are set to 0; Margin:auto; Divclass= "Lev1">I'm the first floor .Divclass= "Lev2">I'm on the second floor .Div> Div>/*css*/. lev1{width:200px; height:2

Vertical centering requires a parent element and a child element to complete the collaboration.... But in order for the child element to be centered vertically, you only need to apply a CSS style to the parent element:. flexbox-container {display:-ms-flexbox;display:-webkit-flex;display:flex;-ms-flex-align:center;- Webkit-align-items:center;-webkit-box-align:center;align-items:center;}Because the browser engine prefix is used above, it looks a bit com

As more and more projects are in contact, you can feel the "center" application is very extensive.Horizontal center, there is not much to say, margin:0 Auto can be solved.The most disturbing is the vertical centering, which is where this chapter will focus.Here's a way to divide the vertical center by class:1. Vertical center of single line textCode:Div P { line-height: 30px; height: 30px; }2. Center image Div > src= "1.j

ObjectiveSome summary of the vertical center layout, beginners can be used.Element classification has been in the "CSS Horizontal Center Summary" in the said, here is not more to repeat.One, single-line text vertical CenterCenter vertically in a single line of text using the following method:height:300px;line-height:300px;Second, the formal vertical center1. Directly in the outer layer of the table vertical Center, simple and fast, this method applies to all elements . The disadvantage is that t

best way to choose? In the first method seems to use the hack technology, actually does not, it is the standard of the web standards, fully conform to the specification, therefore, two kinds of methods can be arbitrarily selected any one of them to use, they do not exist CSS hack problems. Third, the other center way The above is the implementation of horizontal centering with the specific width set. Sometimes we want to make a flexible layout,

First, the problem descriptionWhen the height is fixed or not fixed, the single line or multiline text is difficult to achieve vertical centering;Ii. Causes of production1, the height is not fixed, the CSS itself does not provide the corresponding API support (specifically to provide incomplete);2, browser does not support;Third, the solution:1, using the Line-height property, the Line-height setting and the height of the element.Advantages: simple an

This is said on the Internet, the Line-height value is set to the same size as the height of the value can achieve the vertical center of single-line text. This is indeed true, but there are problems in fact. The problem is height, look at my statement: "Set the line-height to the size of the box you need to achieve the vertical center of single-line text", the difference is that I removed the height, this height is superfluous, you do not believe you can try it yourself. Vertical

Only normal and absolutely positioned elements can be centered, and floating elements do not exist in the center.1. Block-level element centering1) Common flow elements (position:static or position:relative) Center horizontally: {margin:0 auto;} 2) Absolute positioning elements (Position:absolute or position:fixed) Horizontal, Vertical Center: the element {margin:auto; top:0; bottom:0; left:0; right:0; Overflow:auto}, whose parent element {position:relative;} 2. Inlin

Positioning and centering issues are frequently encountered in CSS. For a fixed-height element, the vertical horizontal center of the parent element is implemented by the Position property. This method fails when the size of the element is variable, and we can center it with flex and table, both of which will be carefully studied in the future, using only the position method.The task needs to be completed as follows:　　The corresponding code is as foll

This article is in the reference to the great God article based on the collation of a number of common programs, in addition to some of the personal speculation, if there is inappropriate, please do not hesitate to point outBelow the beginning of the topic, in order to facilitate the verification + display, the following case I will directly attach the personal verification of the source +1.(All instances run, similar to the right, the following is not a sticky map (the author is too lazy ....)

, generally not.cons : IE7 and IE8 beta are not valid, because the content area is highly fixed, and the second method has the same problem.Method FourThis method can only be placed in a single line of text. Simply setting the line-height to the height value of the content container allows the text to be centered.#content {height:100px; line-height:100px;}Pros : Applies to all browsers and is useful for small elements where text does not wrap, such as center