.file-select {
    position: relative;
    display: inline-block;
  
  }
  
  .file-select::before {
    background-color: #f04400;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 3px;
    content: 'Seleccionar'; /* testo por defecto */
    position: absolute;
    left: 10%;
    right: 10%;
    top: 0;
    bottom: 0;
  
  }
  
  .file-select input[type="file"] {
    opacity: 0;
    width: 150px;
    height: 20px;
    display: inline-block;
    
  }
  
  #src-file1::before {
    content: 'SELECCIONAR ARCHIVO';
  }