@charset "utf-8";
body {
  font: normal 18px/1.7 "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3", "メイリオ", Meiryo, "MS Pゴシック", Arial, Verdana, sans-serif;
  text-align: left;
  color: #000;
  text-align: justify;
  overflow-x: hidden;
}

img {
  line-height: 0;
  padding: 0;
  margin: 0;
}

html, body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  text-align: center;

}

img {
  width: 100%;
}

.btn-wrapper {
  position: relative;
  top: 150px;
  width: 80%;
}
.btn img {
  width: 60%;
  position: relative;


}
@media screen and (max-width: 640px) {
  .btn img {
      width: 70%;
  }
}
@media screen and (max-width: 640px) {
  img {
    width: 100%;

}}

.sec {
  text-align: center;
  top: 10vw;
}