centering ruler

1. Vertical center of single row determined by parent elementThis is achieved by setting the height of the parent element and Line-height.2, the parent element determines the multiline vertical centerThere are two ways to align the height of a parent element with multiple lines of text, a picture, and a block element vertically:2.1. Vertical-aligh method: Use the Insert table (including TBODY, TR, TD) label, and set the Vertical-align:middle.When it comes to vertical

Single-line text with height determination of the first parent elementThe height of the parent element determines the vertical centering of a single line of text by setting the height of the parent element and the line-height to a high consistency. (Height: The height of the element, Line-height: As the name implies, row height (line spacing), refers to the distance between the line and the baseline in the text).The difference between the calculated v

In the layout of the time can often be used to center, in this summaryHTML structure:class= "wrap"> class= " Content ">div>div>1. Horizontal Center: Margin:auto; .wrap { width : 400px ; height : 400px ; Background-color : LightBlue ;} .content { width : 200px ; height : 200px ; Background-color : lightcoral ; /* margin:auto can only be centered horizontally */ margin : auto ;} This method is simply a single line of code, but only horizontally centered, and why vertical

method of setting the background image. Example: Body {background:url ("sample.gif") #FFF No-repeat Center;} The key is the center property, which indicates that the background picture is centered in the container. You can also change the Cener to top left or write the numbers directly to adjust its position.2. How to make the text vertically centered in the div for the text, you can not use the background method, you may use the method of increasing the spacing to achieve vertical center, the

Because the work is useful, so I found a few.1.Body { Height100%; Width100%;}.Absolute-center { Background-color:Greenyellow; Width300px Height300PX; position: absolute ; top: 50%; left: 50%; margin-top:-150PX; margin-left:-150PX; } The first method is more common, the elements that need to be vertically centered are absolutely positioned, then the top and left are set to 50%, and they are shifted by using margin-1/2 width and height.This is convenient, but it is i

CSS layout has always been a nightmare for us, and we all think Flexbox is our Savior. It is still to be seen whether it is really as we say, but Flexbox is a very easy solution to the problem of centering the CSS for a long time. Let's see how easy it is:Vertical centering requires a parent element and child elements:However, only the parent element requires a CSS property to set the child element to cente

1.text-align:center;Centering by using the above method is to center the Display:inline in the parent container, and the inline element or text horizontally.2.inline-height: (height) value;When using inline-height, it is often used with the height, so that the content is centered vertically, it is recommended to use Li inside the list;3.margin:auto;When using margin to center, the element is usually given the exact width value, set the Margin:auto; or

its elementsYou can set the height and margin of a block elementIf you do not set the width yourself, its width is the width of its parent elementBlock elements can accommodate block elements and inline elements, but cannot contain block elements in inline elements3. Several centering methods(1) Set text in block element to center horizontallyUse the Text-align style to set the text or picture centered on the block.The style can only manipulate block

Text image vertically centered in the upper left corner of the window in a div with variable width and heightThe main problem is that in the case of Div display Display:block, the text height is uncertain, there is no way to do with the left picture fixed size Vertical Center method, top:50% to vertical centerThe vertical centering of the left and right parts is achieved directly at the beginning, but it cannot be displayed properly because of the dis

%, that is, to achieve the center.By setting float to the parent element, and then setting position:relative and left:50% to the parent element, the child elements are set position:relative and left:-50% to achieve horizontal centering.. Container{float: Left;position:relative; Left:50%}. Container ul{List-style:None;margin:0;padding:0;position:relative; Left:-50%;}. Container Li{float: Left;Display:inline;Margin-right:8px;}Divclass= "Container"> u

Centering method1. Centering the fixed value:　　　　　Content that needs to be centered set a fixed margin or padding value inside the parent box to center the contentDisadvantage: If the parent width change will not be centered2. Adaptive centering1.left:50%;top:50%;margin-left:50%;/* is half the width of the content itself */margin-top:50%2, (Universal Center method)left:0;right:0;bottom:0;top:0;Margin:auto;#

Program Ideas:Horizontal centering setting1. Inline elementsSet Text-align:center2, fixed wide block elementsSet left margin value to auto3. Variable width block elementA: Add a table tag outside the element (complete, including table, TBODY, TR, TD), the element is written in TD, then set the value of margin to autoB: Set the Displa:inine method for this elementC: Parent elements set position:relative and left:50%, child elements set position:relativ

1. line-height: single-line text vertically centeredApplies to the button drop-down box when the line height of a single line of text is set, the text is positioned vertically in the middle of the row height.2.line-height + inline-block Vertical centering of multiple elements or multiple lines of multiple objectsTreating multiple elements or multiline elements as a row element requires that the data be wrapped in a layer, set to Inline-block, and use

For the fixed width of non-floating elements we can use margin:0 auto; To center horizontally, we also have a common technique to solve the problem of horizontal centering for variable-width floating elements. The decomposition is as follows:1. HTML part: class="box">I was floating I am also the center 2. CSS part:. box{Float:Left position:relative; left: " P{ float:left; position: right: /span> So it seems simple, th

　　1. For the set HEIGHT:APX that can be processed on one line; LINE-HEIGHT:APX;2. For a piece of text (it will be displayed in multiple lines)->2.1 if it is possible to set a fixed height ofThe parent element uses display:table; HEIGHT:APX; Child elements use Display:table-cell; Vertical-align:middle;The Note:vertical-align property is valid only for some HTML elements, specifically the (X) HTML tag that has the valign attributeFor example, is basically valid for Inline-block displayed elements

The following summarizes some common vertical centering methods for elements:First, the basic HTML and CSS are#wrap { width:320px; height:160px; background:red;} #wrap >div{ width:50px; height:50px; Background:black; Color: #fff;} Method:/* Scenario One: Absolute positioning negative margin50% method *//* #wrap {position:relative;} *//*.v-center{Position:absolute; top:50%; left:50%; Margin-left: -25px; Margin-top: -25px;} *//* Solution: Us

div setting height,line-height affects the text within the block element vertically centered, the A,img,span within the block are not vertically centered, with the vertical-align:middle; you can handle the vertical centering of the inline primaries under block-level elements such as Div, With no effect, and finally added a * work, can achieve the effect ofstyle>#test *{vertical-align:Middle;}style>Head>Body> DivID= "Test"> imgsrc= "Http://12

===============================. box{width:100%;BORDER:1PX Red Solid;margin:50px Auto;Text-align:center;}. nav{float:;}. Nav li{Display:inline;font-size:16px;height:26px;line-height:26px;margin:5px;}Adaptive horizontal vertical centering as Li sub-elements decreaseUL Li Adaptive centering Navigation

About the absolute (fixed) centering problem 2016-05-29 02:51:52 The first type:div{Position:absolute;background: #f60;width:200px;height:200px;left:50%;top:50%;margin:-100px 0 0-100px;}Note: The parent element of the DIV is the body The second type:first of all, we have seen the Margin:auto in the layout of the page margin:0 auto; Let the page in the Bureau, Margin:auto; it is just the same as he is not let the page around the offic

This article to organize some of the use of CSS to achieve horizontal center/vertical centering of some methods, the tutorial is very basic, I hope to help everyone! First, the horizontal center 1. text-align:center( inline element ) 　　Sets the property text-align:center for its parent element; 2. margin:0 Auto( block-level element ) 　　Set margin:0 Auto for the element itself; 3. Fixed width of element ️position+margin-left . ele{ Position:absol