.how {
    margin: 0 5%;
    margin-top: 50px;
   padding: 50px;
    background-color: #f9f9ff;
    box-shadow: rgba(50, 50, 93, 0.25) 0px 6px 12px -2px, rgba(0, 0, 0, 0.3) 0px 3px 7px -3px;
}

.how_img{
    display: flex;
    justify-content: center;
    align-items: center;
    align-self: center;
}