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我正在使用弹出在屏幕右侧的四个图标的菜单。屏幕右侧显示一个箭头（east-exit-icon），如果将鼠标悬停在上面，则会显示另外四个图标（communicating-icon） 这适用于每个浏览器，但FireFox都适用。 有谁能帮我解决这个问题？在Firefox中悬停的CSS过渡动画
html {
width: 100%;
height: 100%;
position: absolute;
overflow: hidden;
font-family: 'Roboto', sans-serif;
}
#east-exit {
display: flex;
opacity: 1;
z-index: -1;
align-items: stretch;
justify-content: space-around;
flex-direction: column;
position: absolute;
right: 0;
height: 100%;
width: 85px;
font-size: 55px;
}
.east-exit-icon {
-webkit-transition: all .2s ease;
-moz-transition: all .2s ease;
-o-transition: all .2s ease;
-ms-transition: all .2s ease;
transition: all .2s ease;
font-size: 45px;
opacity: 0.1;
}
#east-exit:hover .east-exit-icon { opacity: 0; }
.communicate-icon {
z-index: 1;
-webkit-transition: all .3s ease;
-moz-transition: all .3s ease;
-o-transition: all .3s ease;
-ms-transition: all .3s ease;
transition: all .3s ease;
color: darkgrey;
opacity: 0;
}
#east-exit:hover .communicate-icon { opacity: 1; }
.communicate-icon:hover,
.communicate-icon:focus,
.communicate-icon:active {
-webkit-transform: scale(1.2);
transform: scale(1.2);
-webkit-transition-timing-function: cubic-bezier(0.47, 2.02, 0.31, -0.36);
transition-timing-function: cubic-bezier(0.47, 2.02, 0.31, -0.36);
color: grey;
cursor: pointer;
}<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" rel="stylesheet"/>
<div id="east-exit">
<a><i class="communicate-icon fa fa-envelope"></i></a>
<a><i class="communicate-icon fa fa-comments"></i></a>
<i class="east-exit-icon fa fa-arrow-right"></i>
<a><i class="communicate-icon fa fa-phone"></i></a>
<a><i class="communicate-icon fa fa-camera"></i></a>
</div>编辑：https://jsfiddle.net/grhajrbp/
你能提供一个jsfiddle吗？ – fbid
是的，我很抱歉为了让小提琴奏效，我不得不放弃一些代码。 https://jsfiddle.net/grhajrbp/ – Mayia