*{
    padding: 0;
    margin: 0;
}
#box{
    position: relative;
    width: 300px;
    height: 40px;
    /*margin: 0 auto;*/
    margin-left: 10px;
    margin-top: 10px;
    background-color: #e8e8e8;
    box-shadow: 1px 1px 5px rgba(0,0,0,0.2);
}
.bgColor{
    position: absolute;
    left:0;
    top:0;
    width:40px;
    height: 40px;
    background-color: lightblue;
}

.txt{
    background:-webkit-gradient(linear,left top,right top,color-stop(0,#4d4d4d),color-stop(.4,#4d4d4d),color-stop(.5,#fff),color-stop(.6,#4d4d4d),color-stop(1,#4d4d4d));
    position: absolute;
    width: 100%;
    height: 40px;
    line-height: 40px;
    font-size: 14px;
    text-align: center;
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    -webkit-animation:slide-text 3s infinite;
    -webkit-text-size-adjust:none;
}
@-webkit-keyframes slide-text{0%{background-position:-200px 0} 100%{background-position:200px 0}}
.slider{
    position: absolute;
    left:0;
    top:0;
    width: 50px;
    height: 38px;
    border: 1px solid #ccc;
    background: #fff;
    text-align: center;
    cursor: move;
}
.slider>i{
    position: absolute;
    top:50%;
    left:50%;
    color:#333;
    transform: translate(-50%,-50%);
}
.slider.active>i{
    color:green;
}