.contenedor{
    padding: 20px;
    display: flex;
    flex-direction: row;
    width: 100%;

}

img{
    width: 90%;
    border-radius: 7px;
    margin: 10px;
    justify-content: space-around;
}

img:hover{
    box-shadow: 0 0 0 7px lightgray;
}