@charset "UTF-8";
* {
  padding: 0;
  margin: 0;
}

h1 {
  display: none;
}

body {
  max-width: 780px;
  margin: auto;
  background: #fff;
}

.sec01 img {
  display: block;
  margin: auto;
}
.btn-area {
  width: 780px;
  position: fixed;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  margin: auto;
}
.btn-area img {
  display: block;
  margin: auto;
}

@media screen and (max-width: 780px){
  body {
    max-width: 100%;
  }
  .sec01 img {
    width: 100%;
    display: block;
    margin: auto;
  }
  .btn-area {
    width: 100%;
    position: fixed;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    margin: auto;
  }
  .btn-area img {
    display: block;
    margin: auto;
    width: 100%;
  }
}