可以't get button to move on li:悬停在活动时

我对javascript有点陌生，并使用了一个小的javascript来让我的菜单相应地移动按钮，但我想实现子菜单。现在，当我想让按钮在子菜单被激活时移动（悬停在主li上），它不会移动。

我做错了什么？

需要注意的是，菜单在未激活时也会扩展（悬停第2个li时），这是我的第二个问题。

http://jsfiddle.net/drjvdyhb/

    body {
    font: 400 18px'Fjord One', sans-serif;
    line-height: 1em;
    background-color: #fff;
    color: #c0c5ce;
}
header {
    position: relative;
    background-color: #2c353a;
}
header ul.nav {
    overflow: auto;
    margin: 0em;
    padding: 0em;
}
header ul.nav li {
    position: relative;
    float: left;
    width: 20%;
    list-style: none;
}
header ul.nav li a {
    display: block;
    height: 30px;
    opacity: 0;
    font: 400 1.15em'Fjord One', serif;
    line-height: 30px;
    color: #848e92;
    text-decoration: none;
    text-align: center;
    cursor: default;
    -webkit-transition: all 0.25s ease;
    -moz-transition: all 0.25s ease;
}
header ul.nav li:hover a {
    color: #fff;
    background-color: #222b2f;
}
header ul.nav li:hover ul li a {
    color: #848e92;
    background-color: #2c353a;
}
header ul.nav li ul li:hover a {
    color: #fff;
    background-color: #222b2f;
}
header ul li ul {
    position: relative;
    left: 0px;
    padding: 0px 0px 0px;
    width: 100%;
    height: 100%;
    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none;
    display: none;
    opacity: 0;
    visibility: hidden;
    -webkit-transiton: opacity 0.2s;
    -moz-transition: opacity 0.2s;
    -ms-transition: opacity 0.2s;
    -o-transition: opacity 0.2s;
    -transition: opacity 0.2s;
}
header ul li ul li {
    display: block;
    color: #fff;
}
header ul.nav li ul li {
    width: 50%;
    font-size: 14px;
}
header ul.nav li:hover ul {
    display: block;
    opacity: 1;
    visibility: visible;
}
header ul.nav li:hover button.toggle-nav {
    top 90px;
}
header ul li ul li a {
    font: 400 1em'Fjord One', serif;
    color: #848e92;
}
header.active ul.nav li a {
    height: 60px;
    opacity: 1;
    line-height: 60px;
    cursor: pointer;
}
header.active ul.nav li ul li a {
    Height: 30px;
    line-height: 100%;
}
button.toggle-nav {
    position: absolute;
    top: 30px;
    left: calc(50% - 30px);
    width: 40px;
    height: 35px;
    background-color: #38a6a6;
    font: 400 1.2em'Allan', serif;
    color: #fff;
    border: none;
    line-height: 30px;
    vertical-align: middle;
    outline: none;
    cursor: pointer;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    -webkit-transition: all 0.25s ease;
    -moz-transition: all 0.25s ease;
}
button.toggle-nav:hover {
    height: 50px;
}
button.toggle-nav span {
    display: block;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -webkit-transition: all 0.25s ease;
    -moz-transition: all 0.25s ease;
}
header.active button.toggle-nav {
    top: 60px;
    background-color: #256f6f;
}
            /* My try so far */
header.active ul.nav li.hvr a:hover button.toggle-nav {
    top: 90px;
}                                                 
header.active button.toggle-nav span {
    -webkit-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
}
#nav-toggle {
    cursor: pointer;
    padding: 5px 10px 10px 10px;
}
#nav-toggle span, #nav-toggle span:before, #nav-toggle span:after {
    cursor: pointer;
    border-radius: 1px;
    height: 5px;
    width: 20px;
    background: white;
    position: absolute;
    display: block;
    content:'';
}
#nav-toggle span:before {
    top: 10px;
}
#nav-toggle span:after {
    bottom: 10px;
}
#nav-toggle span, #nav-toggle span:before, #nav-toggle span:after {
    transition: all 500ms ease-in-out;
}
#nav-toggle.active span {
    background-color: transparent;
}
#nav-toggle.active span:before, #nav-toggle.active span:after {
    top: 0;
}
#nav-toggle.active span:before {
    transform: rotate(45deg);
}
#nav-toggle.active span:after {
    transform: rotate(-45deg);
}