#treatment_detail{
    padding: 2em 0;
}
#treatment_detail .treatment_item{
    width: min(94%,980px);
    margin-inline: auto;
    margin-block: 2em 4em;
    border-bottom: solid 1px #999;
    padding-bottom: 4em;
}
#treatment_detail .treatment_item:last-child{
    border: none;
}
.treatment_item h3{
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 1.8em;
}
.treatment_item p{
    line-height: 1.8;
}