在导航栏中放置文字横幅

Question

我开始编写一个网站代码，在那里我开始使用CSS编写HTML代码。但是，我认为我犯了一个错误，即在我开始编程之前我没有放<div>。

以下是导航栏的代码：

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

li {
  float: left;
  border-right: 0px solid #bbb;
}
li:last-child {
  border-right: none;
}
li a {
  display: block;
  color: white;
  text-align: center;
  padding: 19px 16px;
  text-decoration: none;
}
li a:hover:not(.active) {
  background-color: #112;
}
.active {
  background-color: #990000;
}
body {
  margin: 0;
}
ul.topnav {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #333;
  -webkit-transition: all 0.4s ease;
  -moz-transition: all 0.4s ease;
  transition: all 0.4s ease;
}
ul.topnav li {
  float: left;
}
ul.topnav li a {
  display: inline-block;
  color: #FFF;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  transition: 0.3s;
  font-size: 17px;
  font-family: 'Dosis', sans-serif;
}
ul.topnav li a:hover {
  background-color: #990000;
}
ul.topnav li active {
  background-color: #990000;
}
ul.topnav li.icon {
  display: none;
}
@media screen and (max-width: 680px) {
  ul.topnav li:not(:first-child) {
    display: none;
  }
  ul.topnav li.icon {
    float: right;
    display: inline-block;
  }
}
@media screen and (max-width: 680px) {
  ul.topnav.responsive {
    position: fixed;
  }
  ul.topnav.responsive li.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  ul.topnav.responsive li {
    float: none;
    display: inline;
  }
  ul.topnav.responsive li a {
    display: block;
    text-align: left;
  }
  function myFunction() {
    var x=document.getElementById("myTopnav");
    if (x.className==="topnav") {
      x.className +=" responsive";
    }
    else {
      x.className="topnav";
    }
  }
}
.videoWrapperOuter {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.videoWrapperInner {
  float: none;
  clear: both;
  width: 100%;
  position: relative;
  padding-bottom: 50%;
  padding-top: 25px;
  height: 0;
}
.videoWrapperInner iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.container {
  width: 100%;
  max-width: 40.7em;
  margin: 0 auto;
}

<link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css">

<ul class="topnav" id="myTopnav">
  <li class="active">
    <a href="index.html">
      <i class="fa fa-home" aria-hidden="true"></i>
    </a>
  </li>
  <li><a href="contact.html">Contact</a>
  </li>
  <li><a href="studio.html">Rent a Studio</a>
  </li>
  <li class="icon">
    <a href="javascript:void(0);" style="font-size:15px;" onclick="myFunction()">
      <i class="fa fa-bars" aria-hidden="true"></i>
    </a>
  </li>
</ul>

我想在右边放一个文字横幅，当我崩溃时，文字横幅就在导航栏的中间。

Answer 1

在列表中添加了以下li以及right和mob类。

  <li class="right mob"><a href="#">Heading</a>
  </li>

请告诉我这是否符合您的预期？谢谢！

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

li {
  float: left;
  border-right: 0px solid #bbb;
}

li:last-child {
  border-right: none;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 19px 16px;
  text-decoration: none;
}

li a:hover:not(.active) {
  background-color: #112;
}

.active {
  background-color: #990000;
}

body {
  margin: 0;
}

ul.topnav {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #333;
  -webkit-transition: all 0.4s ease;
  -moz-transition: all 0.4s ease;
  transition: all 0.4s ease;
}

ul.topnav li {
  float: left;
}

ul.topnav li.right{
  float: right;
  }

ul.topnav li a {
  display: inline-block;
  color: #FFF;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  transition: 0.3s;
  font-size: 17px;
  font-family: 'Dosis', sans-serif;
}

ul.topnav li a:hover {
  background-color: #990000;
}

ul.topnav li active {
  background-color: #990000;
}

ul.topnav li.icon {
  display: none;
}

@media screen and (max-width: 680px) {
  ul.topnav li:not(.mob) {
    display: none;
  }

  ul.topnav li.icon {
    float: right;
    display: inline-block;
  }
  ul.topnav li.right{
  float: none;
    text-align: center;
  }
}

@media screen and (max-width: 680px) {
  ul.topnav.responsive {
    position: fixed;
  }
  ul.topnav.responsive li.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  ul.topnav.responsive li {
    float: none;
    display: inline;
  }
  ul.topnav.responsive li a {
    display: block;
    text-align: left;
  }
  ul.topnav.responsive li.right{
      position: absolute;
      top:0;
      left: 50%;
      transform: translate(-50%, 0);
  }
}

.videoWrapperOuter {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.videoWrapperInner {
  float: none;
  clear: both;
  width: 100%;
  position: relative;
  padding-bottom: 50%;
  padding-top: 25px;
  height: 0;
}

.videoWrapperInner iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.container {
  width: 100%;
  max-width: 40.7em;
  margin: 0 auto;
}

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css">

<ul class="topnav" id="myTopnav">
  <li class="active mob">
    <a href="index.html">
      <i class="fa fa-home" aria-hidden="true"></i>
    </a>
  </li>
  <li><a href="contact.html">Contact</a>
  </li>
  <li><a href="studio.html">Rent a Studio</a>
  </li>
  <li class="icon">
    <a href="javascript:void(0);" style="font-size:15px;" onclick="myFunction()">
      <i class="fa fa-bars" aria-hidden="true"></i>
    </a>
  </li>
  <li class="right mob"><a href="#">Heading</a>
  </li>
</ul>