body{
    text-align: center;
    font-family: Verdana, Arial, Helvetica, sans-serif;
    padding: 150px;
    background-color: rgb(235, 235, 235);
}
.introducao{
    text-align: center;
    /*display: flex;*/
    justify-content: center;
}
.container, .primeiro-texto{
    /*display:flex;*/
    text-align: justify;
    justify-content: normal;
}