.file-select {
        position: relative;
        display: inline-block;
    }
    .file-select::before {
        color: white;
        display: flex;
        justify-content: center;
        align-items: center;
        border-radius: 5px;
        content: 'Seleccionar'; /* testo por defecto */
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
    }

    .file-select input[type="file"] {
        opacity: 0;
        width: 100%;
        height: 32px;
        display: inline-block;
    }

    #src-file1::before {
    content: 'Buscar Archivo';
    }