#mainImg { background-image: url("../img/treatment/bg_mainimg01_sp.jpg"); }

@media screen and (min-width: 600px) { #mainImg { background-image: url("../img/treatment/bg_mainimg01_pc.jpg"); } }

/*  #safety
================================================ */
#safety .inner { padding-top: 30px; padding-bottom: 25px; }

#safety .tit { margin-top: 15px; }

#safety .secSafety { margin-top: 30px; }

#safety .secSafety + .secSafety { margin-top: 0; }

@media screen and (min-width: 600px) { #safety .inner { padding-top: 75px; padding-bottom: 70px; }
  #safety .tit { margin-top: 80px; }
  #safety .secSafety { margin-top: 66px; } }