.file {
  position: relative;
  display: inline-block;
  background: #1289ff;
  border-color: #1289ff;
  color: #ffffff;
  border-radius: 4px;
  padding: 4px 12px;
  overflow: hidden;
  text-decoration: none;
  text-indent: 0;
  line-height: 20px;
}
.file input {
  position: absolute;
  font-size: 100px;
  right: 0;
  top: 0;
  opacity: 0;
}
.file:hover {
  background: #1289ff;
  border-color: #1289ff;
  color: #ffffff;
  text-decoration: none;
}