CSS3宽度过渡设计

Question

我想一旦用户徘徊在其中一个Navbar上的图标。刚刚显示的文字应该具有宽度过渡。我尝试一个人做这个，但我无法完成不破坏其余的设计

html：

<header>
  <img src="http://www.websignature.ch/img/logo_nav.png" alt="WebSignature"/>
</header>
<nav>    
  <ul>
    <li><a href="#"><i class="fa fa-cogs"></i><span>Services</span></a></li><!--
 --><li><a href="#"><i class="fa fa-th-list"></i><span>Projects</span></a></li><!--
 --><li><a href="#"><i class="fa fa-users"></i><span>About</span></a></li><!--
 --><li><a href="#"><i class="fa fa-envelope"></i><span>Contact</span></a></li>
  </ul>
</nav>

CSS：

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
header {
  position: fixed;
  top: 0;
  left: 0;
  padding: 0.5em;
  height: 4em;
  width: 100%;
  background: #2196F3;
  background: -webkit-linear-gradient(left, #2196F3, #1976D2);
  background: -o-linear-gradient(right, #2196F3, #1976D2);
  background: -moz-linear-gradient(right, #2196F3, #1976D2);
  background: linear-gradient(to right, #2196F3, #1976D2);
  -webkit-box-shadow: 0px 1px 5px 0px rgba(0,0,0,0.75);
  -moz-box-shadow: 0px 1px 5px 0px rgba(0,0,0,0.75);
  box-shadow: 0px 1px 5px 0px rgba(0,0,0,0.75);
}
header img {
  height: 100%;
  width: auto;
}
nav {
  position: fixed;
  top: 0;
  right: 0;
  background: #2196F3;
  background: -webkit-linear-gradient(left, #2196F3, #1976D2);
  background: -o-linear-gradient(right, #2196F3, #1976D2);
  background: -moz-linear-gradient(right, #2196F3, #1976D2);
  background: linear-gradient(to right, #2196F3, #1976D2);
  -webkit-filter:drop-shadow(2px 2px 5px rgba(0,0,0,0.75));
}
nav:before {
  content:"";
  position: absolute;
  top:0;
  right:100%;
  width: 0;
    height: 0;
    border-top: 81.78px solid #2196F3;
    border-left: 81.78px solid transparent;
}
nav ul li {
  display: inline-block;
}
nav ul li a {
  display: block;
  padding: 0.7em;
  color: #ffffff;
  text-decoration: none;
  font-size: 2em;
}
nav ul li a span {
  display: none;
  padding-left: 0.5em;
  overflow: hidden;
  font-family: 'Poppins', sans-serif;
}
nav ul li a:hover span {
  display: inline;
}

jsfiddle：https://jsfiddle.net/yunnigg/gl1ulljs/

Answer 1

射击。基本上，我在这里正在做的是在跨度元素上为文本增添动画。这将指向您正确的方向。

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
header {
  position: fixed;
  top: 0;
  left: 0;
  padding: 0.5em;
  height: 4em;
  width: 100%;
  background: #2196F3;
  background: -webkit-linear-gradient(left, #2196F3, #1976D2);
  background: -o-linear-gradient(right, #2196F3, #1976D2);
  background: -moz-linear-gradient(right, #2196F3, #1976D2);
  background: linear-gradient(to right, #2196F3, #1976D2);
  -webkit-box-shadow: 0px 1px 5px 0px rgba(0,0,0,0.75);
  -moz-box-shadow: 0px 1px 5px 0px rgba(0,0,0,0.75);
  box-shadow: 0px 1px 5px 0px rgba(0,0,0,0.75);
}
header img {
  height: 100%;
  width: auto;
}
nav {
  position: fixed;
  top: 0;
  right: 0;
  background: #2196F3;
  background: -webkit-linear-gradient(left, #2196F3, #1976D2);
  background: -o-linear-gradient(right, #2196F3, #1976D2);
  background: -moz-linear-gradient(right, #2196F3, #1976D2);
  background: linear-gradient(to right, #2196F3, #1976D2);
  -webkit-filter:drop-shadow(2px 2px 5px rgba(0,0,0,0.75));
}
nav:before {
  content:"";
  position: absolute;
  top:0;
  right:100%;
  width: 0;
    height: 0;
    border-top: 81.78px solid #2196F3;
    border-left: 81.78px solid transparent;
}
nav ul li {
  display: inline-block;
}
nav ul li a {
  display: block;
  padding: 0.7em;
  color: #ffffff;
  text-decoration: none;
  font-size: 2em;
}
nav ul li a span {
  padding-left: 0.5em;
  overflow: hidden;
  font-family: 'Poppins', sans-serif;
  display: inline-block;
  text-indent: -160px;
  transition: all 200ms;
}
nav ul li a:hover span {
  text-indent: 0px;
}

Answer 2

在这里工作小提琴

希望它有帮助。：）

谢谢

Modefied nav CSS

nav ul{
 -webkit-transition:all 0.3s ease;
 transition:all 0.3s ease;
}
nav ul li {
 display: inline-block;
 -webkit-transition:all 0.3s ease;
 transition:all 0.3s ease;
}
nav ul li a {
 display: block;
 width:50px;
 padding: 0.7em;
 color: #ffffff;
 text-decoration: none;
 white-space:nowrap;
 font-size: 2em;
-webkit-transition:all 0.3s ease;
 transition:all 0.3s ease;
 position:relative;
}
nav ul li a span {
 display: none;
 padding-left: 0.5em;
 overflow: hidden;
 font-family: 'Poppins', sans-serif;
 }
nav ul li a:hover span{
display:inline;
}
nav ul li a:hover {
width:250px;
}