.flex-container {
    display:flex;
    justify-content:center;
}

.home-box { 
    border: 12px solid #ffffff;
    box-shadow: 5px 10px 40px 0 rgb(0 0 0 / 25%);
    background: #eeeeee;
    padding: 26px 58px;
    max-width:945px;
    margin: 30px 0 30px 0;
}

#newslettersignup > div {
    padding: 0;
}