Question

function myFunction() {
  var x = document.getElementById("myTopnav");
  if (x.className === "topnav") {
    x.className += " responsive";
  } else {
    x.className = "topnav";
  }
}

.topnav button {
  background-color: inherit;
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 6px 16px;
  transition: 0.4s;
  font-size: 24px;
  border-bottom-left-radius: 5px;
  border-bottom-right-radius: 5px;
  margin-left: 30px;
  margin-right: 30px;
  font-weight: bold;
  color: white;
}
.topnav {
  overflow: hidden;
  background-color: #333;
}
.new_container {
  display:flex;
  justify-content: center;
  
}
.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
 border-bottom: solid 2px violet;
  color: black;
}

.topnav a.active {
  border-bottom: solid 2px violet;
  color: white;
}

.topnav .icon {
  display: none;
}
.icon :hover{
    color: red !important;
    border-bottom: none !important;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
    position:absolute;
    right:10px;
  }
}

.topnav{
  display: flex;
  justify-content: center;
  margin: 25px auto;

  }

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 10px;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}

<div class="topnav" id="myTopnav">
        <div class= "new_container">
       <a href="#"><button class="tablinks">Home</button></a>
        <a href="#"><button class="tablinks current">TAB2</button></a>
        <a href="#"><button class="tablinks">TAB3</button></a>
      <a href="#"><button class="tablinks">TAB4</button></a>
       <a href="#"> <button class="tablinks">TAB5</button></a>
       <a href="javascript:void(0);" class="icon" onclick = "myFunction()">
        <i class="fa fa-bars"></i>
      </a>
        </div>
      </div>

这是我的响应式导航栏代码。但是，当它进入移动视图时，我希望我的元素垂直显示。相反，它会水平对齐。我该如何解决？当屏幕尺寸减小到 600px 时，我希望元素垂直堆叠。正如我所看到的，new_container 类正在被应用，如何在移动视图中删除它

Answer 1

使用 media queries、flex-direction 属性。

function myFunction() {
  var x = document.getElementById("myTopnav");
  if (x.className === "topnav") {
    x.className += " responsive";
  } else {
    x.className = "topnav";
  }
}

.topnav button {
  background-color: inherit;
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 6px 16px;
  transition: 0.4s;
  font-size: 24px;
  border-bottom-left-radius: 5px;
  border-bottom-right-radius: 5px;
  margin-left: 30px;
  margin-right: 30px;
  font-weight: bold;
  color: white;
}

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

.new_container {
  display: flex;
  justify-content: center;
  flex-direction: column;
}

@media (min-width: 600.1px) {
  .new_container {
    flex-direction: row;
  }
}

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

.topnav a:hover {
  border-bottom: solid 2px violet;
  color: black;
}

.topnav a.active {
  border-bottom: solid 2px violet;
  color: white;
}

.topnav .icon {
  display: none;
}

.icon :hover {
  color: red !important;
  border-bottom: none !important;
}

<div class="topnav" id="myTopnav">
  <div class="new_container">
    <a href="#"><button class="tablinks">Home</button></a>
    <a href="#"><button class="tablinks current">TAB2</button></a>
    <a href="#"><button class="tablinks">TAB3</button></a>
    <a href="#"><button class="tablinks">TAB4</button></a>
    <a href="#"> <button class="tablinks">TAB5</button></a>
    <a href="javascript:void(0);" class="icon" onclick="myFunction()">
      <i class="fa fa-bars"></i>
    </a>
  </div>
</div>

另一个例子，你可以play with the screen dimensions

响应式导航栏

1 个答案: