main .tyorui{
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    
}
main .tyorui .flex-item{
    width: 45%;
    display: flex;
    background-color: #cffdff;
}
main .tyorui .flex-item img{
    width: 40%;
    margin: 10px;
}