body {
 width: 100%;
 height: 100%;
 margin: 0;
 padding: 0;
}

.wrap {
 width: 100%;
}

.content {
 width: 1200px;
 max-width: 1200px;
 margin: 0 auto;
}

img {
 width: 100%;
 margin-top: 100px;
}

@media only screen and (max-width: 1200px) {
 .content {
  width: 800px;
  max-width: 800px;
 }
 img {
  margin-top: 60px;
 }
}

@media only screen and (max-width: 800px) {
 .content {
  width: 460px;
  max-width: 460px;
 }
 img {
  margin-top: 30px;
 }
}