.premium {width:100%;}
.premium dl {width:100%;}
.premium dl dd {padding:10px 0;}
.premium dl .img_box {width:100%; display:flex; gap:10px;}
.premium dl .img_box img {width:100%;}
.premium dl .txt_box {margin:30px auto;}
.premium dl .txt_box h3 {font-size:18px; margin-bottom:15px;}
.premium dl .txt_box ul {}
.premium dl .txt_box ul li {margin:10px 0; font-size:16px; list-style-type: disc; list-style-position: outside; margin-left:20px;}

/* tablet */
@media screen and (max-width:991px){
}

/* mobile */
@media screen and (max-width:767px){
    .premium dl dd {display:block;}
    .premium dl .img_box {width:100%; flex-direction:column; margin-bottom:20px;}
    .premium dl .img_box img {width:100%;}
    .premium dl .txt_box {display:block; width:100%; padding-left:0;}
}