.art_title_abouts {
    width: 100%;
    margin-bottom: 20px;
    text-align: center;
    margin-top: 15px;
    border-bottom: 1px solid #ccc;
}
.art_title_abouts h1 {
    display: inline-block;
    font-size: 22px;
    font-weight: bolder;
    line-height: 50px;
    color: #333;
}
.contents img{ max-width:600px; margin:10px auto; display:block;}
.contents strong{ font-weight:bold; font-size:16px; color:#333;}

@media (max-width: 768px){
 
  .contents img{ max-width:100% !important; height:auto!important; }
.art_title_abouts h1 {
    font-size: 20px;
    line-height: 32px;

}

}