@media screen and (max-width: 640px){
#slider .slide .cover_case{
    font-style: normal;font-family:"microsoft yahei";
    display: none;
    color: #fff;
    position: absolute;
    width: 60%;
    height: 100%;
    overflow:hidden;
    line-height: 1.8;
    left: 0;
    bottom: 0;
    z-index: 10;
    background:url(../images/cover_bg.png) repeat;
    opacity: 0;
    filter:alpha(opacity=0)\9;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"\9;
    transition: all 0.4s;
    -moz-transition: all 0.4s; /* Firefox 4 */
    -webkit-transition: all 0.4s; /* Safari บอ Chrome */
    -o-transition: all 0.4s; /* Opera */
}
#slider .slide .des{
    font-size: 14px;
    display: block;
    width: 96%; text-align:center;
    padding: 0 2%;
    line-height: 25px;
    overflow: hidden;
}
#slider .slide .cover_case p{
    padding-top: 40%;
}
#slider .slide a.txt{
    display: block;
    width: 100%;
    padding-top: 40%; 
    height: 61%;
}
#slider .slide .tittle{
    display: block;
    max-width: 100%; text-align:center;
    margin-bottom: 6px; margin-top:30px; font-family:Arial, Helvetica, sans-serif;
    line-height: 1.8; font-size:30px;
}
#slider .slide:hover .cover_case{
    display: block;
    -webkit-animation: fadeIn .5s both;
    -o-animation: fadeIn .5s both;
    -ms-animation: fadeIn .5s both;
    -moz-animation: fadeIn .5s both;
    animation: fadeIn .5s both;
    filter:alpha(opacity=100)\9;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)"\9;
}
#slider .slide:hover .cover_case .tittle{
    -webkit-animation: fadeInUp 1s .1s both;
    -o-animation: fadeInUp 1s .1s both;
    -ms-animation: fadeInUp 1s .1s both;
    -moz-animation: fadeInUp 1s .1s both;
    animation: fadeInUp 1s .1s both;
}
#slider .slide:hover .cover_case .des{
    -webkit-animation: fadeInUp 1s .3s both;
    -o-animation: fadeInUp 1s .3s both;
    -ms-animation: fadeInUp 1s .3s both;
    -moz-animation: fadeInUp 1s .3s both;
    animation: fadeInUp 1s .3s both;
}
}