javascript - 如何在响应菜单上的导航链接悬停时设置下划线？

Question

我已经为悬停在导航菜单上的下划线编写了代码，效果很好。但是，当我创建一个响应式导航菜单时，悬停时的下划线会覆盖整个 block 的宽度，而不是导航链接，就像浏览器大于 600 像素时一样。

Here's the site ，或者您可以引用以下代码段。

感谢任何帮助。

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

@font-face {
  font-family: "Lyon";
  src: url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf");
  src: url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf") format("woff"), url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf") format("opentype"), url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf") format("svg");
}

body {
  padding: 0;
  margin: 0;
  background: white;
}

* {
  box-sizing: border-box;
}

h1 {
  font-family: 'Lyon';
  font-size: 24px;
  max-width: 800px;
  text-align: center;
  margin: auto;
  padding-top: 16px;
  padding-left: 16px;
  padding-right: 16px;
}

.navbar {
  z-index: 1;
  font-family: 'Lyon';
  background-color: white;
  position: fixed;
  bottom: 0;
  width: 100%;
  border-top: .05rem solid;
  display: flex;
  justify-content: space-between;
  padding: 14px 16px;
}

.navbar a {
  color: black;
  font-family: 'Lyon';
  font-size: 24px;
  text-align: center;
  text-decoration: none;
  position: relative;
}

.navbar a:hover {
  color: black;
  font-family: 'Lyon';
  text-decoration: none;
}

.navbar a:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: #000;
  visibility: hidden;
  -webkit-transform: scaleX(0);
  transform: scaleX(0);
  -webkit-transition: all 0.3s ease-in-out 0s;
  transition: all 0.3s ease-in-out 0s;
}

.navbar a:hover:before {
  visibility: visible;
  -webkit-transform: scaleX(1);
  transform: scaleX(1);
}

.navbar a.active {
  background-color: white;
  color: black;
  font-style: none;
  font-family: 'Lyon';
}

.navbar .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .navbar a {
    display: none;
    padding-top: 6px;
  }
  .navbar a.icon {
    float: right;
    display: block;
  }
  .navbar.responsive .icon {
    position: absolute;
    left: 10px;
    top: 8px;
  }
  .navbar.responsive a {
    float;
    none;
    display: block;
    text-align: center;
  }
  .navbar.responsive {
    display: block;
  }
  .navbar.responsive a:before {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #000;
    visibility: hidden;
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
    -webkit-transition: all 0.3s ease-in-out 0s;
    transition: all 0.3s ease-in-out 0s;
  }
  .navbar.responsive a:hover:before {
    visibility: visible;
    -webkit-transform: scaleX(1);
    transform: scaleX(1);
  }
}

p {
  margin: 10px 0;
}

<div class="navbar" id="myNavbar">
  <a href="#about" class="active">About</a>
  <a href="#lindsay">Lindsay</a>
  <a href="#contact">Branding</a>
  <a href="#contact">Photography</a>
  <a href="#contact">Instagram</a>
  <a href="javascript:void(0);" style="font-size:18px;" class="icon" onclick="myFunction()">i</a>
</div>

Answer 1

我正在检查您的 CSS，问题是 a 标签具有 display:block 的属性，它扩展了标签，因此，样式适用于标签本身, 没有在文本中，所以，如果你想在显示较小时保留空间，你应该将每个 a 标签包装在列表项或 div 中，并将 display:block

的属性传递给它

这就是我说的例子

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

@font-face {
  font-family: "Lyon";
  src: url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf");
  src: url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf") format("woff"), url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf") format("opentype"), url("http://staging1.oakpark.co/wp-content/uploads/2019/07/Lyon-Text-Regular.otf") format("svg");
}

body {
  padding: 0;
  margin: 0;
  background: white;
}

* {
  box-sizing: border-box;
}

h1 {
  font-family: 'Lyon';
  font-size: 24px;
  max-width: 800px;
  text-align: center;
  margin: auto;
  padding-top: 16px;
  padding-left: 16px;
  padding-right: 16px;
}
.navbar {
  z-index: 1;
  font-family: 'Lyon';
  background-color: white;
  position: fixed;
  bottom: 0;
  width: 100%;
  border-top: .05rem solid;
  display: flex;
  justify-content: space-between;
  padding: 14px 16px;
	margin: 0;
}

.navbar a {
  color: black;
  font-family: 'Lyon';
  font-size: 24px;
  text-align: center;
  text-decoration: none;
  position: relative;
}

.navbar a:hover {
  color: black;
  font-family: 'Lyon';
  text-decoration: none;
}
.navbar li{
	list-style:none;
}

.navbar a:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: #000;
  visibility: hidden;
  -webkit-transform: scaleX(0);
  transform: scaleX(0);
  -webkit-transition: all 0.3s ease-in-out 0s;
  transition: all 0.3s ease-in-out 0s;
}

.navbar a:hover:before {
  visibility: visible;
  -webkit-transform: scaleX(1);
  transform: scaleX(1);
}

.navbar a.active {
  background-color: white;
  color: black;
  font-style: none;
  font-family: 'Lyon';
}

.navbar .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .navbar a{
    display: none;
    padding-top: 6px;
  }
  .navbar .icon {
    float: right;
    display: block;
  }
  .navbar.responsive .icon {
    position: absolute;
 		left: 10px;
    top: 8px;
  }
  .navbar.responsive li a {
    float;
    none;
    display: inline;
    text-align: center;
		margin: 4px;
  }
	.navbar.responsive li {
    float;
    none;
    text-align: center;
		margin: 6px 00px;
  }
  .navbar.responsive {
   	align-content: center;
		flex-flow:column;
  }
  .navbar.responsive li a:before {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #000;
    visibility: hidden;
    -webkit-transform: scaleX(0);
    transform: scaleX(0);
    -webkit-transition: all 0.3s ease-in-out 0s;
    transition: all 0.3s ease-in-out 0s;
  }
  .navbar.responsive li a:hover:before {
    visibility: visible;
    -webkit-transform: scaleX(1);
    transform: scaleX(1);
  }
}

<ul class="navbar" id="myNavbar">
	<a href="javascript:void(0);" style="font-size:18px;" class="icon" onclick="myFunction()">i</a>
	<li><a href="#about" class="active">About</a></li>
	<li><a href="#lindsay">Lindsay</a></li>
	<li><a href="#contact">Branding</a></li>
	<li><a href="#contact">Photography</a></li>
	<li><a href="#contact">Instagram</a></li>
</ul>