Why are these two divs being pushed over so slightly to down?_问答_开发者

Why are these two divs being pushed over so slightly to down?

开发者 https://www.devze.com 2023-01-20 02:29 出处：网络

My HTML is simple, I have a content area that wraps around everything and inside it I want three columsn. Two of them have to have fixed widths, and main content area should be flexible.

相关专题：css

My HTML is simple, I have a content area that wraps around everything and inside it I want three columsn. Two of them have to have fixed widths, and main content area should be flexible.

I wonder what I'm doing wrong - EDIT here is the complete code sorry if it's a bit long!:

<%@ Master Language="C#" Inherits="System.Web.Mvc.ViewMasterPage" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title><asp:ContentPlaceHolder ID="TitleContent" runat="server" /></title>
    <link href="../../Content/Site.css" rel="stylesheet" type="text/css" />
</head>

<body>    
    <div id="header">
        <img src="../../Content/images/cumaviLogo.png" alt="Cumavi.com - Compras y ventas online en Bolivia!" />    
        <ul id="topuserbar">
            <li>Bienvenidos, <span class="userSalute">Sergio!</span></li>
            <li><a href="#">Mis Anuncios</a></li>
            <li><a href="#">Perfil</a></li>
            <li><a href="#">Ayuda</a><img class="helpicon" src="../../Content/images/helpIcon.png" alt="Help icon." width="20" height="20"/></li>
            <li><a href="#">Cerrar Sesion</a></li>
        </ul>
    </div>
    <div id="headershadow">
    </div>
    <div id="body">
        <div id="leftnavigation"></div>
        <div id="contentarea"></div>
        <div id="advertisingarea">
        </div>
    </div>


    <asp:ContentPlaceHolder ID="MainContent" runat="server" />
</body>
</html>


body
{
    background-image: url('images/test.png');
    background-repeat:repeat;
    margin:0;
    padding:0;
}

#header
{
    background-image: url('images/headerBackground.png');
    background-repeat:repeat;
    width:auto;
}

#headershadow
{
    background-color:Black;
    min-height:2px;
}

#topuserbar
{
    font-family:Georgia;
    font-size:large;    
    float:right;
    margin-top:35px;  
    margin-right:15px;
}

#topuserbar ul
{
}

#topuserbar li
{
    display:inline;
    margin-left:10px;
    color:#fff;
}

#topuserbar .helpicon
{
    position:relative;开发者_如何转开发
    top:4px;
    left:2px;
}

#topuserbar a
{
    color:White;
}

#topuserbar a:hover
{
    color:Yellow;
}

/*****************BODY AREA*******************/

#body
{
    border: 1px solid red;
    min-height:800px;
    width:960px;
}

#leftnavigation
{
    border: 1px solid green;
    min-height:500px;
    float:left;
    width:190px;
}

#contentarea
{
    border:1px solid blue;
    min-height:500px;
    float:left;
    width:590px;
}

#advertisingarea
{
    border:1px solid orange;
    width:150px;
    float:left;
    min-height:500px;
}

Why are these two divs being pushed over so slightly to down?

Could it be because of the cumulative 1 pixel border?

Sergio, I'm not sure if this is going to be the answer but try replacing borders with outlines. Borders have a pixel width whereas outlines don't. This may, possibly, solve your problem.

CSS usage: outline{1px solid red;}

Could it be:

#headershadow
{
    background-color:Black;
    min-height:2px;

The height and padding above/below the <ul id=topuserbar> is pushing down the second and third divs. Add height:43px; (or greater) to #header to push elements below it down and that will line up the 3 body divs.

Firebug is your friend!