0

我不确定为什么会发生这种情况，因为开发人员工具中没有任何内容显示身体越过空白区域。唯一显示在空白区域的是当我将鼠标悬停在开发人员元素工具中源代码中的 html 上时。

我body margin设置为 0，所以我不知道为什么我有一个空白。

有人知道是什么原因造成的吗？

<body>
    <header class="header">
        <div class="header_wrap">
          <span class="nav-btn"></span>
            <ul class="nav_list">
              <a href="/"><li>Home</li></a>
              <a href="Spray-Foam-Insulation-Material-Suppliers"><li>Spray Foam Insulation</li></a>
              <a href="Portable-Spray-Foam-Kits"><li>Portable Spray Foam Kits</li></a>
              <a href="Polyurea"><li>Polyurea</li></a>
              <a href="Personal-protective-equipment"><li>Personal Protective Equipment</li></a>
              <a href="Spray-Foam-Equipment-Financing"><li>Financing</li></a>
              <a href="Contact-us"><li>Contact us</li></a>
            </ul>
         </div>
    </header>
    <div id="lower-header">
        <div id="logo-wrap">
            <a href="/"><img src="http://sprayfoamequipmentinsider.com/images/SFEI Logo & CSS/Spray Foam equipment insider 3.jpg" id="header-logo1"></a>
            <a href="PMC-spray-foam-equipment"><img src="http://sprayfoamequipmentinsider.com/images/Contractor Images/top ad.png" id="header-logo2"></a>
        </div>
        <div id="topnav">
          <ul>
            <a href="Spray-Foam-Parts-Repairs-Techs"><li class="last">TECH/PARTS/REPAIRS</li></a>
            <a href="Spray-Foam-school"><li>SPRAY FOAM SCHOOL</li></a>
            <a href="Used-For-sale-Spray-Foam-Insulation-Rigs-Machines"><li>USED/BUY/SELL</li></a>
            <a href="Spray-Foam-Rigs"><li>SPRAY FOAM RIGS</li></a>
            <a href="Spray-Foam-equipment"><li>SPRAY FOAM EQUIPMENT</li></a>
          </ul>
        </div>
        <br class="clear" />
     </div>

body{margin:0; padding:0; font-size:13px; font-family:Georgia, "Times New Roman", Times, serif; color:#666666; background-color:#FFFFFF;}

.header {
    margin: 0;
    background-color: #333;
    height: 50px;
}
.header_wrap {
    text-align: center;
    margin: 0 auto;
    position: relative;
}
.nav-btn {
    display: none;
}
.nav_list {
    text-decoration: none;
    background: #333;
    color: #FFF;
    list-style: none;
    position: relative;
    z-index: 1;
}
.nav_list > a {
    display: inline-block;
    padding: 15px 12px;
    text-decoration: none;
    transition: ease-in-out .5s;
}
.nav_list > a:first-child {
    padding-left: 0px;
    margin: 0;
}

.nav_list > a > li {
    text-decoration: none;
    font-size: 1.1em;
    color: #FFF;
}

#topbar {
    display:block;
    position:relative;
    width:960px;
    margin:0 auto;
}
/* ----------------------------------------------Header------------------------------------- */

#lower-header {
    margin: 0 auto;
    padding: 10px 0 20px;
    z-index: 1;
    color: #666666; 
    background: #000000; 
    border-bottom: 1px solid #363636;
    width: 100%;
    overflow: hidden;
}
#logo-wrap {
    width: 960px;
    margin: 0 auto;
}
#header-logo1 {
    float: left;
    width: 400px;
    height: 93px;
}
#header-logo2 {
    float: right;
    width: 310px;
    height: 75px;
}
#header-logo1, #header-logo2 { 
    border: none;
}
/*#lower-header h1, #header p, #header ul{margin:0; padding:0; list-style:none; line-height:normal;}*/

#topnav {
    float: left;
    padding-top: 22px;
    width: 100%;
    text-align: center;
    font-size: 1.1em;
    background: #000000;
    font-family: Georgia, "Times New Roman", Times, serif;
}
#topnav li {
    display: inline-block;
    padding: 10px 12px 0 12px;
    border-top: 2px solid transparent;
}
#topnav li:hover {
    border-top: 2px solid #0C3;
    color: #0C3;
}
#topnav a li {
    color: #FFF;
    line-height: 1.3em;
    text-decoration: underline;
}
4

2 回答 2

1

可能是默认边距ul.nav_list通过与其祖先（直到并包括body）折叠而干扰。将这些利润归零应该可以解决这个问题。

于 2016-03-31T03:59:06.160 回答
0

在控制台下面的样式表中创建间距问题。

ul, menu, dir {
    display: block;
    list-style-type: disc;
    -webkit-margin-before: 1em;
    -webkit-margin-after: 1em;
    -webkit-margin-start: 0px;
    -webkit-margin-end: 0px;
    -webkit-padding-start: 40px;
}

见下面的截图： 在此处输入图像描述

消除此问题覆盖“.nav_list”css 类中的边距

下面的例子：

.nav_list {
    text-decoration: none;
    background: #333;
    color: #FFF;
    list-style: none;
    position: relative;
    z-index: 1;
    -webkit-margin-before: 0px;
    -webkit-margin-after: 0px;
    -webkit-margin-start: 0px;
    -webkit-margin-end: 0px;
 }
于 2016-03-31T04:07:49.107 回答