#main_img_40_20 {
  background: url(../shop_image/image_A/cms_149.jpg) no-repeat center center;
  background-size: auto auto;
  background-size: cover;
  transition: 1.0s ;
  padding: 40px 0;
  text-align: center;
  border: 1px solid #ccc;
  width: 50%;
  float: left;
}

#main_img_40_20:hover {
  opacity: 0.5 ;
}


.text_a_40_20 h2 {
  text-align: center;
  font-size: 1.5em;
  color: #4682b4;
}

.box_40_20 {
  margin-top:px;
  padding: 0 100px;
}

@media screen and (max-width:760px) {

#main_img_40_20 {
  float: none;
  width: 100%;
}

.box_40_20 {
  margin-top:px;
  padding: 0 20px;
}

.text_a_40_20 h2 {
  text-align: center;
  font-size: calc(1.5em - 0.2em);
  color: #4682b4;
}

}


@media screen and (max-width:480px) {

#main_img_40_20 {
  float: none;
  width: 100%;
}

.box_40_20 {
  margin-top:px;
  padding: 0 20px;
}
.text_a_40_20 h2 {
  text-align: center;
  font-size: calc(1.5em - 0.2em);
  color: #4682b4;
}
}