html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

.container {
  position: relative;
}

.main-img-pc {
  display: block;
  width: 100%;
  max-width: 100%;
}
.main-img-m {
  max-width: 880px;
  width: 100%;
  margin: 0 auto;
  display: none;
}

.btn1 {
  position: absolute;
  cursor: pointer;
  width: 24.6%;
  height: 2.82%;
  top: 35.4%;
  left: 25%;
}
.btn2 {
  position: absolute;
  cursor: pointer;
  width: 24.6%;
  height: 2.82%;
  top: 35.4%;
  left: 50%;
}
.btn3 {
  position: absolute;
  width: 39.8%;
  height: 3.29%;
  top: 40.2%;
  left: 30%;
}

@media screen and (max-width: 600px) {
  .main-img-m {
    display: block;
  }
  .main-img-pc {
    display: none;
  }

  .btn1 {
    position: absolute;
    cursor: pointer;
    width: 46.6%;
    height: 3.57%;
    top: 33.54%;
    left: 2%;
  }
  .btn2 {
    position: absolute;
    cursor: pointer;
    width: 39.74%;
    height: 3.57%;
    top: 33.54%;
    left: 50%;
  }
  .btn3 {
    position: absolute;
    width: 95.8%;
    height: 4.16%;
    top: 38.59%;
    left: 2%;
  }
}