.top{
   /*background: #009dff;*/
   background:linear-gradient(to right,#009dff 0,#00c8ff 100%);
   position:fixed;
   z-index:1031;
   top:0;
   left:0;
   height:4px;
   transition:all 1s;
   width:0;
   overflow: hidden;
 }
.colors{
    width: 100%;
    height: 4px;
}