header .box{
    width: 400px;
    float: left;
    margin-top: 20px;
    background: #adadad;
    left: 50%;
    margin-left: 100px;

}
header #search{
    width: 300px;
    height: 30px;
    border-width: 0;
    background-color: #adadad;
    margin-left: 10px;
}
a{
    color: black;
}
.vda{
    margin-top: 30px;position: relative;
}
.ctrl{
    margin-left: 25px;
}
.mid{
    background-color: black;position: relative;margin-top: 100px;
    overflow: hidden;height: 50px;
}
.worklist{
    display: inline-block;
    width: 1200px;
    margin: 20px auto;
}
.work{
    width: 150px;
    height: 240px;
    margin-top: 20px;
    float: left;
}
.work_img{
    width: 150px;height: 200px
}
.work_txt{
    margin-top: 10px;
    text-align: center;
}
.star{
    margin-left: 20px;
    margin-top: 10px;
}
.paramlist{
    margin: 50px 0 0 0;
    width: 1200px;
    border-width:0 0 2px 0;
    border-style: solid;
    border-image: -webkit-linear-gradient(-180deg,#ffffff, #666666) 5 10;
    border-image: -moz-linear-gradient(-180deg,#ffffff, #666666) 5 10;
    border-image: linear-gradient(90deg, rgba(255,255,255,0.00) 0%,#adadad , rgba(255,255,255,0.00) 99%) 2 2 2 2;
    display: inline-block;
}
.param{
    font-size: 20px;
    height: 75px;
    float: left;
    width: 250px;
    margin-left: 50px;
 }
.loginbtn{
    width: 320px;height: 40px;text-align: center;font-size: 15px;margin: 30px 0 0 400px;background-color: #ffaf36;color: white;border-width: 0;border-radius: 5px;
    outline: none;
}
.dropdowns{width: 500px;margin: 0 auto}
.dropdown-menu_1{
    display: none;
}