body {
    background-color: #36a;
    }
    .mainBox {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    }
    .textBox {
    width: 30%;
    text-align: center;
    }
    h1 {
    color: #fff;
    }
    img {
    width: 50%;
    border: 1px solid #fff;
    }