Question

我正在创建网站，并注意到带有下拉列表的导航栏的位置比我想要的低很多。我立即尝试使用一些不同的方法，例如边距和填充，position：fixed和position：absolute，并设置与顶部的距离，但这几乎删除了我的下拉列表。我很想知道发生这种情况的原因，以及如何解决我的代码。

h1 {
	font-size: 54px;
	font-family: 'Kalam', cursive;
	margin: 10px;
	color: white;
}
body {
	background: url("flowers.jpg") no-repeat fixed;
}


.navbar {
    overflow: hidden;
    background-color: #333;
    font-family: 'Poiret One', cursive;
	background-color: rgba(249, 197, 249, 0.5);
	width: 100%;
}

.navbar a {
    float: left;
    font-size: 16px;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

.dropdown {
    float: left;
    overflow: hidden;
}

.dropdown .dropbtn {
    font-size: 16px;    
    border: none;
    outline: none;
    color: white;
    padding: 14px 16px;
    background-color: inherit;
    font-family: inherit;
    margin: 0;
}

.navbar a:hover, .dropdown:hover .dropbtn {
    background-color: rgb(249, 197, 249);
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

.dropdown-content a {
    float: none;
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
}

.dropdown-content a:hover {
    background-color: rgb(249, 197, 249);
}

.dropdown:hover .dropdown-content {
    display: block;
}

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="Japan.css">
<link href="https://fonts.googleapis.com/css?family=Kalam" rel="stylesheet"> 
<link href="https://fonts.googleapis.com/css?family=Poiret+One" rel="stylesheet"> 
<title>
Japan
</title>
</head>
<body>
<h1>Japan: Land of the Rising Sun</h1>
<div style="margin-top: 110px"class="navbar">
  <a href="">Intro</a>
  <a href="">WEIRD Facts</a>
<div class="dropdown">
<button class="dropbtn">Nature
<i class="fa fa-caret-down"></i>
</button>
<div class="dropdown-content">
<a href="Fauna.htm">Fauna</a>
<a href="Flora.htm">Flora</a>
<a href="Geography.htm">Geography</a>
</div>
</div>
  <div class="dropdown">
    <button class="dropbtn">Culture
      <i class="fa fa-caret-down"></i>
    </button>
    <div class="dropdown-content">
      <a href="Cuisine.html">Cuisine</a>
      <a href="Clothing.html">Clothing</a>
      <a href="Traditions.html">Traditions</a>
	  <a href="Sports.html">Sports</a>
	  <a href="Holidays.html">Holidays</a>
    </div>
  </div> 
</div>
</body>
</html>

Answer 1

由于多余的空白和h1上方的navbar标签，您有间距

因此您需要从类navbar中删除边距，并将h1移到navbar下方

请参阅下面的演示

h1 {
	font-size: 54px;
	font-family: 'Kalam', cursive;
	margin: 10px;
	color: #333;
}
body {
	background: url("flowers.jpg") no-repeat fixed;
margin: 0;
}


.navbar {
    overflow: hidden;
    background-color: #333;
    font-family: 'Poiret One', cursive;
	background-color: rgba(249, 197, 249, 0.5);
	width: 100%;
}

.navbar a {
    float: left;
    font-size: 16px;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

.dropdown {
    float: left;
    overflow: hidden;
}

.dropdown .dropbtn {
    font-size: 16px;    
    border: none;
    outline: none;
    color: white;
    padding: 14px 16px;
    background-color: inherit;
    font-family: inherit;
    margin: 0;
}

.navbar a:hover, .dropdown:hover .dropbtn {
    background-color: rgb(249, 197, 249);
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

.dropdown-content a {
    float: none;
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
}

.dropdown-content a:hover {
    background-color: rgb(249, 197, 249);
}

.dropdown:hover .dropdown-content {
    display: block;
}

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="Japan.css">
<link href="https://fonts.googleapis.com/css?family=Kalam" rel="stylesheet"> 
<link href="https://fonts.googleapis.com/css?family=Poiret+One" rel="stylesheet"> 
<title>
Japan
</title>
</head>
<body>

<h1>Japan: Land of the Rising Sun</h1>

<div class="navbar">
  <a href="">Intro</a>
  <a href="">WEIRD Facts</a>
<div class="dropdown">
<button class="dropbtn">Nature
<i class="fa fa-caret-down"></i>
</button>
<div class="dropdown-content">
<a href="Fauna.htm">Fauna</a>
<a href="Flora.htm">Flora</a>
<a href="Geography.htm">Geography</a>
</div>
</div>
  <div class="dropdown">
    <button class="dropbtn">Culture
      <i class="fa fa-caret-down"></i>
    </button>
    <div class="dropdown-content">
      <a href="Cuisine.html">Cuisine</a>
      <a href="Clothing.html">Clothing</a>
      <a href="Traditions.html">Traditions</a>
	  <a href="Sports.html">Sports</a>
	  <a href="Holidays.html">Holidays</a>
    </div>
  </div> 
</div>



</body>
</html>

Answer 2

尝试添加normalize.css或reset.css，使您可以从每个项目开始，并在每个浏览器中使用相同的样式：

https://necolas.github.io/normalize.css/

Answer 3

您可能需要研究引导程序。
使用引导程序，您可以轻松创建美观，干净的网页。

bootstrap docs

我认为下面的HTML代码是您想要做的。（减去您偏离路线的样式）

for /F "usebackq delims=" %%P in (`git diff --name-only --diff-filter=ACM ^| findstr -I "java kt"`) do %INTELLIJ_DIR%\bin\format %%P

导航栏重新定位很麻烦

3 个答案: