Untitled

  <div style={{alignItems: "center"}}>
    <div className="row">
        <div className="title">Witaj ponownie</div>
        <div className="title">Analiza rynku walutowego</div>
    </div>
    <div className="row"></div>
    <div className="row"></div>

  </div>


.row { 
    display: flex;
    flex-wrap: wrap;
    background-color: dupa;
}

.row:nth-child(even) { 
    background-color: lightyellow;
}

.title {
    flex-grow: 1;
    flex-basis: 100px;
}