main{
    /* text-align: center; */
    font-size: 1.8rem;
}
/* .container{
    text-align: center
} */
.img_flu{
    display: block;
    margin: auto;
    margin-top: 10px;
    margin-bottom: 10px;
    width: 80%;
    min-width: 320px;
}
.flu_txt{
    width: 70%;
    margin: 0 auto 10px;
}