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html - 如何正确对齐我的网页的导航栏？

转载 作者：太空宇宙 更新时间：2023-11-04 00:52:48 27 4
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我已经在我的网页上创建了导航栏，为此我得到了 W3School( https://www.w3schools.com/howto/howto_js_responsive_navbar_dropdown.asp ) 的帮助。我想将导航链接放在右侧，它们的顺序应该是从“左到右”。但是按钮的位置(顺序)是从“右到左”，如下图所示。有人可以指导我在我的代码中哪里做错了吗？我是 Web 开发的初学者。

enter image description here

enter image description here

Desired Output should be something like this:

enter image description here

another example

enter image description here

Order

enter image description here

Here is my code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server"><title></title>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"/>
<style>
body {margin:0;font-family:Arial}


.topnav {
  overflow: hidden;
  background-color:#37312f;
  padding: 12px 14px;
}

.topnav a {
  float: right;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 12px 14px;
  text-decoration: none;
  font-size: 17px;
}

 .topnav a.logo {
                    font-size: 25px;
                    font-weight: bold;
                    color: #fff;
                }

   .topnav-right {
            float:left;
            /*height: 53px;*/
        }


.active {
  background-color: #4CAF50;
  color: white;
}

.topnav .icon {
  display: none;
}

.dropdown {
  float: right;
  overflow: hidden;
}

.dropdown .dropbtn {
  font-size: 17px;    
  border: none;
  outline: none;
  color: white;
  padding: 12px 14px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.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: -de1;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 14px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.topnav a:hover, .dropdown:hover .dropbtn {
  background-color: #555;
  color: white;
}

.dropdown-content a:hover {
  background-color: #ddd;
  color: black;
}

.dropdown:hover .dropdown-content {
  display: block;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child), .dropdown .dropbtn {
    display: none;
  }
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
  .topnav.responsive .dropdown {float: none;}
  .topnav.responsive .dropdown-content {position: relative;}
  .topnav.responsive .dropdown .dropbtn {
    display: block;
    width: 100%;
    text-align: left;
  }
}
</style>
</head>
<body>
    <form id="form2" runat="server">
       <div class="topnav" id="myTopnav">
  <a href="#home" class="active">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
  <div class="dropdown">
    <button class="dropbtn">Dropdown 
      <i class="fa fa-caret-down"></i>
    </button>
    <div class="dropdown-content">
      <a href="#">Link 1</a>
      <a href="#">Link 2</a>
      <a href="#">Link 3</a>
    </div>
  </div> 
  <a href="#about">About</a>
  <a href="javascript:void(0);" style="font-size:15px;" class="icon" onclick="myFunction()">&#9776;</a>
</div>

<div style="padding-left:16px">
  <h2>Responsive Topnav with Dropdown</h2>
  <p>Resize the browser window to see how it works.</p>
  <p>Hover over the dropdown button to open the dropdown menu.</p>
</div>

<script>
    function myFunction() {
        var x = document.getElementById("myTopnav");
        if (x.className === "topnav") {
            x.className += " responsive";
        } else {
            x.className = "topnav";
        }
    }
</script>
    </form>
</body>
</html>

最佳答案

你的.topnav a css类包含

float: right;

并且.dropdowncss类也包含

float: right;

将其更改为float: left; 

.topnav a {
    float: left;               <= Change here from right to left
    color: #f2f2f2;
    text-align: center;
    padding: 12px 14px;
    text-decoration: none;
    font-size: 17px;
}

.dropdown {
    float: left;              <= Change here from right to left
    overflow: hidden;
}

同时更改 .topnav-right css 类，

.topnav-right {
    float: right;            <= Change here left to right
}

让你的 chnages 像 HTML 一样

<div class="topnav" id="myTopnav">
  <div class="topnav-right">
      ...
  </div>
</div>

所以最后你的代码将是，

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" />
    <style>
        body {
            margin: 0;
            font-family: Arial
        }


        .topnav {
            overflow: hidden;
            background-color: #37312f;
            padding: 12px 14px;
        }

            .topnav a {
                float: left;
                color: #f2f2f2;
                text-align: center;
                padding: 12px 14px;
                text-decoration: none;
                font-size: 17px;
            }

                .topnav a.logo {
                    font-size: 25px;
                    font-weight: bold;
                    color: #fff;
                }

        .topnav-right {
            float: right;
        }


        .active {
            background-color: #4CAF50;
            color: white;
        }

        .topnav .icon {
            display: none;
        }

        .dropdown {
            float: left;
            overflow: hidden;
        }

            .dropdown .dropbtn {
                font-size: 17px;
                border: none;
                outline: none;
                color: white;
                padding: 12px 14px;
                background-color: inherit;
                font-family: inherit;
                margin: 0;
            }

        .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: -de1;
        }

            .dropdown-content a {
                float: none;
                color: black;
                padding: 12px 14px;
                text-decoration: none;
                display: block;
                text-align: left;
            }

        .topnav a:hover, .dropdown:hover .dropbtn {
            background-color: #555;
            color: white;
        }

        .dropdown-content a:hover {
            background-color: #ddd;
            color: black;
        }

        .dropdown:hover .dropdown-content {
            display: block;
        }

        @media screen and (max-width: 600px) {
            .topnav a:not(:first-child), .dropdown .dropbtn {
                display: none;
            }

            .topnav a.icon {
                float: right;
                display: block;
            }
        }

        @media screen and (max-width: 600px) {
            .topnav.responsive {
                position: relative;
            }

                .topnav.responsive .icon {
                    position: absolute;
                    right: 0;
                    top: 0;
                }

                .topnav.responsive a {
                    float: none;
                    display: block;
                    text-align: left;
                }

                .topnav.responsive .dropdown {
                    float: none;
                }

                .topnav.responsive .dropdown-content {
                    position: relative;
                }

                .topnav.responsive .dropdown .dropbtn {
                    display: block;
                    width: 100%;
                    text-align: left;
                }
        }
    </style>
</head>
<body>
    <form id="form2" runat="server">
        <div class="topnav" id="myTopnav">
            <div class="topnav-right">
                <a href="#home" class="active">Home</a>
                <a href="#news">News</a>
                <a href="#contact">Contact</a>
                <div class="dropdown">
                    <button class="dropbtn">
                        Dropdown
                        <i class="fa fa-caret-down"></i>
                    </button>
                    <div class="dropdown-content">
                        <a href="#">Link 1</a>
                        <a href="#">Link 2</a>
                        <a href="#">Link 3</a>
                    </div>
                </div>
                <a href="#about">About</a>
                <a href="javascript:void(0);" style="font-size:15px;" class="icon" onclick="myFunction()">&#9776;</a>
            </div>
        </div>

        <div style="padding-left:16px">
            <h2>Responsive Topnav with Dropdown</h2>
            <p>Resize the browser window to see how it works.</p>
            <p>Hover over the dropdown button to open the dropdown menu.</p>
        </div>

        <script>
            function myFunction() {
                var x = document.getElementById("myTopnav");
                if (x.className === "topnav") {
                    x.className += " responsive";
                } else {
                    x.className = "topnav";
                }
            }
        </script>
    </form>
</body>
</html>

关于html - 如何正确对齐我的网页的导航栏？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55509086/

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