how to make box centered in css

preferred multi-year CSS layout is inseparable from the floating, Float:left!!However, under the conditions given, which should be floating or floating??Here's a try:First let Side-bar and content all float to the left.. Header{Height:80px;width:100%;Background-color:#654a8e; }. Side-bar{width:200px;Height:100%;Background-color:#3ad3cd;float: Left;text-align:Center; }. Content{Height:100%;width:100%;Background-color:#fd145e;float: Left; }The results

BFC: block-level formatting contextIFC: Inline Formatting contextExamples are as follows:At this point, both out and in heights are 100px.Abnormal condition: But out is blocked by in, and there is a 10px gap on the top. Solution: We add Overflow:hiddento out, the out is blocked and the 10px blank is not, but the out height also becomes 110px.This anomaly is known as margin overlap, BFC is block-level margin overlap, and ifc is the margin overlap of the elements in the row.The above is a parent-

2013-07-21 15:06:47Beijing time 4 months, 8 hours, Lushan County, Yaan City, Sichuan province (north latitude 30.3, Longitude 103.0) 7.0 magnitude earthquake occurred. Source depth of km. The major web site will be grayed out, I sorted out the next part of the website grayed out CSS code. 1, the website all grayHTML{Filter:grayscale (100%);-webkit-filter:grayscale (100%);-moz-filter:grayscale (100%);-ms-filter:grayscale (100%);-o-filter:gra

This time to everyone to bring css+transition to make explicit animation, the attention of the matter of what, the following is the actual case, together to see. Let's see first. A small part with transition effect in our actual development of the application probability is still relatively large, However, in the process of developing the small program may have a small partner found transition this proper

; Divclass= "MSG">a>Flasha>Div> Divclass= "MSG">a>Integrala>Div> Divclass= "MSG">a>Commentsa>Div> Divclass= "MSG">a>Concerna>Div> Div> Divclass= "text">Document contentDiv> Div>Body>HTML>Implementation of the method: first do a HTML tag, do a basic style out, we want to put the user this box mouse touch after a drop-down menuAfter the good effect:To achieve this function is to pay attention

For example, make a small circle (in a red box):How HTML and CSS should be written:css:p span { padding:2px 9px; background: #CCC; Border-radius:50%; Margin-left:5px; Cursor:pointer;} P span.current { background: #F90;}The padding setting allows the interior of the span to occupy an empty space and fill the background color. Margin does not contain

css| Web Page This article was originally my own translation of learning materials, I think this method is good, so share with you. With the help of the husband to learn the Web standards just half a month, some places may not be very accurate translation, if there are objections, please put forward, I will immediately amend. ------------------------------------------------------- Author:Alan Pearce Original:Multi-column Layouts climb out of the

[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform] South Korea's Web site features a distinctive design style, bright colors, and now more and more people are imitating this style. Korean style of web site design ideas are loved by everyone, because of its rich color changes, Korean style of the site has a most obvious feature is for the table or the title bar often add horizontal or vertical a ribbon. We usually have image image software to

: #f30; * * The color must be the same as the above demo border color */top:-40px;left:20%;}If it's a solid arrow, you can do that.Then continue to turn the arrow into hollow, the principle of the same as the above solid, just want to make it smaller, position shifted, color and the demo background color is OK;. in{border:18px solid Transparent;Border-bottom-color: #fff; * * Color must be the same as the demo background color * *top:-35px;left:21%;}Su

Attention:The top and bottom of the inside and outside margins of the inline elements are not working, and want him to work to make him into a block element plus: Display:bloockAttention:If the element sets a background, the background is populated with the content area + margin AreaUse padding to set up the navigation bar exercises:The code is as follows:Shown below:　　　　　　　　　　CSS

Share a bubble tip box, the practice of the techniques are: (1) JS response to the mouse event; (2) make a pure CSS triangle. Effect this way: This is HTML: Copy Code code as follows: if (document.all) e = event; var obj = document.getElementById (' Bubble_tooltip '); var obj2 = document.getElementById (' bubble_tooltip_content '); obj2.inn

On the phone when writing a triangle, I generally use pseudo-class, just the beginning of the use of the picture, but in the current cell phone HD screen, the picture is easy to distort, or use pseudo-class bar!The first kind: a 90-degree ">" with only lines. (You can do the arrow of a drop-down box, etc.) for example:. next:after{Content: "";width:6px;height:6px;border-left:1px solid #666;border-bottom:1px solid #666;Transform:rotate (225DEG);-webkit

. Z-index: Sets the upper and lower layers of the element displayWhen you move the mouse over the lower picture, you need to move the underlying picture to the top, and the Z-index property controls the hierarchical relationship it displays. The Z-index value of the photo you want to show in the top level is set larger than the other photos. img{ z-index:1; } img:hover{ z-index:2; }Set the level of the normal picture is 1; When the mouse is over, the level is