页面顶部的神秘空白

Question

I'm having trouble with some whitespace above my table. 我在桌子上方的空白处遇到麻烦。 I have a table that holds two buttons and then right below it is a Google map. 我有一张桌子，上面放着两个按钮，下面是一张Google地图。 I would like to float the table over top of the map instead of having them listed, if you will. 如果您愿意的话，我想将表格放在地图上方，而不是将其列出。 I get about ten pixels of white space and I am having so much trouble figuring out why. 我得到大约十个像素的空白，并且我很难找出原因。 Any ideas? 有任何想法吗？ Here is the first part of my HTML: 这是我的HTML的第一部分：

   <body onload="initMap()">
<div>
    <table width="100%"  >
        <tr>
            <th height="45" align="right" bgcolor="#CED0D0"  scope="col">
                <a href = http://search.html class="classname">Search</a> 
                <a href = http://loggedout.html class="classname">Log Out</a>
            </th>
        </tr>
    </table>        
</div>   
<div id="map_canvas" style="float:left; width:100%; height:100%"></div>

Map CSS 地图CSS

html { height: 100% }
body { height: 100%; margin: 0; padding: 0; }
#map_canvas { height: 100% }

table.alerts {
    border-width: 8px;
    border-spacing: 2px;
    border-style: outset;
    border-color:#FFF;
    border-collapse: separate;
    background-color:#FFF;
    bottom:0;
    position:absolute;
    font-family:Lucida Grande, Tahoma, Arial, Verdana, sans-serif;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    border-bottom-left-radius: 0px;
    border-bottom-right-radius: 0px;
    float:left;
    margin-right: 5px;
}

table.alerts th {
    border-width: 8px;
    padding: 0px;
    border-style: none;
    border-color:#999;
    background-color:#FFFFFF;
    font-family:Arial-Black,Helvetica,sans-serif;
    height: 40px;
    text-align: center;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    font-size:130%;
}

table.alerts td {
    border-width: 0px;
    padding: 3px;
    border-style: none;
    border-color:#039;
    background-color: rgb(247, 247, 242);
    font-family:"Arial", Gadget, sans-serif;        
    font-weight:bold;
}

.black_overlay {
    display: none;
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index:1001;
    -moz-opacity: 0.8;
    opacity:.60;
    filter: alpha(opacity=80);
}

.white_content {
    display: none;
    position: absolute;
    top: 20%;
    left: 13%;
    width: 100%;
    height: 60%;
    padding: 10px;
    background-color: white;
    z-index:1002;
    overflow: auto;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;           
}

#bar {
    position:absolute;
    top: 0px;  
    right: 0px;

}

#body {
    margin:0;
    padding:0;
}


.greyBox{
    padding:7px;
    background-color:#c6c6c6;
    margin-bottom:0px;
    margin-left:4px;
    width:200px;
    height:26px;
    font-family:Arial,Helvetica,sans-serif;
    text-align : center;
    font-size:130%;

}


.bottom{
    position: absolute;
    bottom: 0; 
}

p.hide { 
    display: none; 
}

Button CSS: 按钮CSS：

.classname {
    -moz-box-shadow:inset 0px 1px 0px 0px #ffffff;
    -webkit-box-shadow:inset 0px 1px 0px 0px #ffffff;
    box-shadow:inset 0px 1px 0px 0px #ffffff;
    background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ededed), color-stop(1, #dfdfdf) );
    background:-moz-linear-gradient( center top, #ededed 5%, #dfdfdf 100% );
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ededed', endColorstr='#dfdfdf');
    background-color:#ededed;
    -moz-border-radius:6px;
    -webkit-border-radius:6px;
    border-radius:6px;
    border:1px solid #dcdcdc;
    display:inline-block;
    color:#777777;
    font-family:arial;
    font-size:15px;
    font-weight:bold;
    padding:6px 24px;
    text-decoration:none;
    text-shadow:1px 1px 0px #ffffff;
}.classname:hover {
    background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #dfdfdf), color-stop(1, #ededed) );
    background:-moz-linear-gradient( center top, #dfdfdf 5%, #ededed 100% );
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#dfdfdf', endColorstr='#ededed');
    background-color:#dfdfdf;
}.classname:active {
    position:relative;
    top:1px;
}

Answer 1

I saved your code and loaded it in chrome and saw the whitespace at the top. 我保存了您的代码并将其加载到chrome中，并在顶部看到了空白。 Looks to be from the tr , because you have the table set to border-collapse: separate and border-width : 8px and border-spacing set to 2px. 看起来是来自tr ，因为您已将表设置为border-collapse：split和border-width：8px，border-spacing设置为2px。 spacing + width = 10px. 间距+宽度= 10像素。

So not seeing why you did this (or why you're using a table at all, honestly), I would add the following: 因此，我不知道为什么要这样做（或者说真的为什么要使用表），我将添加以下内容：

table {
    border-width: 0px;
    border-spacing: 0px;
    border-collapse: collapse;
}

Answer 2

用这个替换您的<table width="100%">标记-

<table width="100%"  cellpadding="0" cellspacing="0" border="0">

页面顶部的神秘空白

问题描述

2 个解决方案

解决方案1
2 已采纳 2012-03-09 07:17:04

解决方案2
1 2012-03-09 07:22:30

页面顶部的神秘空白

问题描述

2 个解决方案

解决方案1 2 已采纳 2012-03-09 07:17:04

解决方案2 1 2012-03-09 07:22:30

解决方案1
2 已采纳 2012-03-09 07:17:04

解决方案2
1 2012-03-09 07:22:30