<div class="in-f-box">
  <input type="file" />
  <span>Click here to import your file!</span>
</div>
.in-f-box{
    color: #fff;
    background: blue;
    display: block;
    cursor: pointer;
    font-size: 1.2em;
    border-radius: 5px;
    width: 300px;
    height: 100px;
    line-height: 100px;
    position: relative;
    text-align: center;
 
 
 
    /* Transition Background */
    -webkit-transition: background .4s ease;
    -moz-transition: background .4s ease;
    -o-transition: background .4s ease;
    -ms-transition: background .4s ease;
    transition: background .4s ease;
}
.in-f-box:hover{
    background: #222;
}
.in-f-box input[type=file]{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
}
Rerun