当它缩小到移动屏幕时如何在响应式导航栏中添加搜索栏

Question

我正在开发一个不是使用引导程序制作的导航栏。我想要导航栏上的搜索栏和一些下拉菜单，但我的搜索栏无法正常工作。它不会进入导航栏并使屏幕尺寸变大变小，就像从桌面到移动一样

当屏幕尺寸改变时，每个菜单都会进入响应式菜单，但是当尺寸改变时，搜索栏并没有做我想要的。搜索栏也应该进入其他人要去的那个菜单

function myFunction() {
  var x = document.getElementById("myTopnav");
  if (x.className === "topnav") {
    x.className += " responsive";
  } else {
    x.className = "topnav";
  }
}
/* Javascript only */
function mydropdown(element) {
  var dropdowns = document.getElementsByClassName("dropdown-content");
  var i;
  for (i = 0; i < dropdowns.length; i++) {
    dropdowns[i].classList.remove('show');
  }
  // element.nextSibling is the carriage return… need to go to the next next to point on the dropdown menu
  element.nextSibling.nextSibling.classList.toggle("show");
}

/* W3Schools function to close the dropdown when clicked outside. */
window.onclick = function(event) {
  if (!event.target.matches('.dropbtn')) {
    var dropdowns = document.getElementsByClassName("dropdown-content");
    var i;
    for (i = 0; i < dropdowns.length; i++) {
      var openDropdown = dropdowns[i];
      if (openDropdown.classList.contains('show')) {
        openDropdown.classList.remove('show');
      }
    }
  }
}

body {margin:0;font-family:Arial}

.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

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

.topnav .icon {
  display: none;
}


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


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

.dropdown .dropbtn {
  cursor: pointer;
  font-size: 16px;
  border: none;
  outline: none;
  color: white;
  padding: 14px 16px;
  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: 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: #ddd;
}

.show {
  display: block;
}
/* Style the input container */
.topnav .search-container {
  float: right;
}

/* Style the input field inside the navbar */
.topnav input[type=text] {
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
  border: none;
}
.search-container button {
  float: right;
  padding: 6px;
  margin-top: 8px;
  margin-right: 16px;
  background: #ddd;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

@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;
  }
}

<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" onclick="mydropdown(this)">Dropdown
    <i class="fa fa-caret-down"></i>
  </button>
  <div class="dropdown-content" id="myDropdown">
    <a href="#">Link 1</a>
    <a href="#">Link 2</a>
    <a href="#">Link 3</a>
  </div>
  </div>
    <div class="dropdown">
    <button class="dropbtn" onclick="mydropdown(this)">Dropdown 2
    <i class="fa fa-caret-down"></i>
  </button>
  <div class="dropdown-content" id="myDropdown">
    <a href="#">jdjd</a>
    <a href="#">Link 2</a>
    <a href="#">Link 3</a>
  </div>
  </div>

  <a href="#about">About</a>
     <div class="search-container">
    <form action="/action_page.php">
      <input type="text" placeholder="Search.." name="search">
      <button type="submit">Submit</button>
    </form>
  </div>
  <a href="javascript:void(0);" style="font-size:15px;" class="icon" onclick="myFunction()">&#9776;</a>
</div>

Answer 1

样式仅适用于 .topnav a:not(:first-child), .dropdown .dropbtn

您应该在两个响应式媒体查询中添加搜索容器类，然后修改搜索按钮样式以使其适合