forgeplus/app/assets/stylesheets/admins/ec_tempaltes.scss

.admins-ec-templates-index-page{
  .template-file-upload{
    padding: 10px;
    background: #fafafa;
    border: 1px dashed #ccc;
    text-align: center;
    color: #999;
    position: relative;
    width: 100%;

  }
  input[name='file']{
    opacity: 0;
    position: absolute;
    display: inline-block;
    left: 0;
    height: 43px;
    top: 0;
    width:100%;
    cursor: pointer;
  }
}