.k{
    margin: auto;
    padding: 30px ;
    text-align: center;
}
.f{
    padding: 5%;
    display: flex;
    justify-content: center;
    flex-direction: column;
    flex-wrap: wrap;
    align-items: center;
    text-align: center;
}
.f1{box-sizing: border-box;
    display: flex;
    justify-content: space-around;
    align-items: center;
}
.f11{
    flex-basis: 50%;
}
.f11 img{
    width: 100%;
    height: auto;
}