body{
    display: flex;
    align-items: center;
    justify-content: center;
}
.phone{
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #3897F0;
    height: 844px;
    width: 390px;
    border: black solid 2px;
}
img{
    height: 306px;
}