本文小编为大家详细介绍“css3代码如何实现一个垂直下拉动画菜单”,内容详细,步骤清晰,细节处理妥当,希望这篇“css3代码如何实现一个垂直下拉动画菜单”文章能帮助大家解决疑惑,下面跟着小编的思路慢慢深入,一起来学习新知识吧。
代码如下:
<nav> <ul class="mcd-menu"> <li> <a href=""> <i class="fa fa-home"></i> <strong>Home</strong> <small>sweet home</small> </a> </li> <li> <a href="" class="active"> <i class="fa fa-edit"></i> <strong>About us</strong> <small>sweet home</small> </a> </li> <li> <a href=""> <i class="fa fa-gift"></i> <strong>Features</strong> <small>sweet home</small> </a> </li> <li> <a href=""> <i class="fa fa-globe"></i> <strong>News</strong> <small>sweet home</small> </a> </li> <li> <a href=""> <i class="fa fa-comments-o"></i> <strong>Blog</strong> <small>what they say</small> </a> <ul> <li><a href="#"><i class="fa fa-globe"></i>Mission</a></li> <li> <a href="#"><i class="fa fa-group"></i>Our Team</a> <ul> <li><a href="#"><i class="fa fa-female"></i>Leyla Sparks</a></li> <li> <a href="#"><i class="fa fa-male"></i>Gleb Ismailov</a> <ul> <li><a href="#"><i class="fa fa-leaf"></i>About</a></li> <li><a href="#"><i class="fa fa-tasks"></i>Skills</a></li> </ul> </li> <li><a href="#"><i class="fa fa-female"></i>Viktoria Gibbers</a></li> </ul> </li> <li><a href="#"><i class="fa fa-trophy"></i>Rewards</a></li> <li><a href="#"><i class="fa fa-certificate"></i>Certificates</a></li> </ul> </li> <li> <a href=""> <i class="fa fa-picture-o"></i> <strong>Portfolio</strong> <small>sweet home</small> </a> </li> <li> <a href=""> <i class="fa fa-envelope-o"></i> <strong>Contacts</strong> <small>drop a line</small> </a> </li> <li class="float"> <a class="search"> <input type="text" value="search ..."> <button><i class="fa fa-search"></i></button> </a> <a href="" class="search-mobile"> <i class="fa fa-search"></i> </a> </li> </ul> </nav>
这里用ul构造了菜单的基本结构。
接下来就利用CSS3代码来实现菜单的下拉和动画效果。
这是鼠标滑过菜单项时的动画代码:
.mcd-menu li a i, .mcd-menu li a strong, .mcd-menu li a small { position: relative; transition: all 300ms linear; -o-transition: all 300ms linear; -ms-transition: all 300ms linear; -moz-transition: all 300ms linear; -webkit-transition: all 300ms linear;}.mcd-menu li:hover > a i { opacity: 1; -webkit-animation: moveFromTop 300ms ease-in-out; -moz-animation: moveFromTop 300ms ease-in-out; -ms-animation: moveFromTop 300ms ease-in-out; -o-animation: moveFromTop 300ms ease-in-out; animation: moveFromTop 300ms ease-in-out;}.mcd-menu li:hover a strong { opacity: 1; -webkit-animation: moveFromLeft 300ms ease-in-out; -moz-animation: moveFromLeft 300ms ease-in-out; -ms-animation: moveFromLeft 300ms ease-in-out; -o-animation: moveFromLeft 300ms ease-in-out; animation: moveFromLeft 300ms ease-in-out;}.mcd-menu li:hover a small { opacity: 1; -webkit-animation: moveFromRight 300ms ease-in-out; -moz-animation: moveFromRight 300ms ease-in-out; -ms-animation: moveFromRight 300ms ease-in-out; -o-animation: moveFromRight 300ms ease-in-out; animation: moveFromRight 300ms ease-in-out;}</p> <p>.mcd-menu li:hover > a { color: #e67e22;}
以下定义了鼠标滑过后文字图标滑过的动画,分别是从顶部划入,从左侧划入,从右侧划入:
@-webkit-keyframes moveFromTop { from { opacity: 0; -webkit-transform: translateY(200%); -moz-transform: translateY(200%); -ms-transform: translateY(200%); -o-transform: translateY(200%); transform: translateY(200%); } to { opacity: 1; -webkit-transform: translateY(0%); -moz-transform: translateY(0%); -ms-transform: translateY(0%); -o-transform: translateY(0%); transform: translateY(0%); }}@-webkit-keyframes moveFromLeft { from { opacity: 0; -webkit-transform: translateX(200%); -moz-transform: translateX(200%); -ms-transform: translateX(200%); -o-transform: translateX(200%); transform: translateX(200%); } to { opacity: 1; -webkit-transform: translateX(0%); -moz-transform: translateX(0%); -ms-transform: translateX(0%); -o-transform: translateX(0%); transform: translateX(0%); }}@-webkit-keyframes moveFromRight { from { opacity: 0; -webkit-transform: translateX(-200%); -moz-transform: translateX(-200%); -ms-transform: translateX(-200%); -o-transform: translateX(-200%); transform: translateX(-200%); } to { opacity: 1; -webkit-transform: translateX(0%); -moz-transform: translateX(0%); -ms-transform: translateX(0%); -o-transform: translateX(0%); transform: translateX(0%); }}
css的基本语法是什么
css的基本语法是:
1、css规则由选择器和一条或多条声明两个部分构成;
2、选择器通常是需要改变样式的HTML元素;
3、每条声明由一个属性和一个值组成;
4、属性和属性值被冒号分隔开。
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