body {
  background: white;
  margin: 0;
  text-align: center;
  white-space: nowrap;
  user-select: none;
}
h1 {
  font-size: 23px;
}
h2 {
  font-size: 19px;
}
a {
  text-decoration: none;
  color: white;
  font-weight: bold;
}
p {
  margin-top: 0;
  padding: 5px;
  font-size: 16px;
}
ul {
  list-style: none;
  padding-left: 0;
}

/* header */
header {
  background: rgba(235, 235, 235, 0.95);
  width: 100vw;
  height: 80px;
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10;
}
.top {
  display: flex;
}
.top > h2 {
  margin: 45px 0 0 10px;
}
.pc-button {
  background: tomato;
  width: 30vw;
  height: 40%;
  margin-top: 20px;    
  margin-left: auto;
  margin-bottom: 20px;
  padding: 10px;
  border-radius: 10px;
}
.sp-button {
  background: tomato;
  width: 15vw;
  height: auto;
  margin-left: auto;
  padding: 10px;
  border-radius: 10px;
}
.pc-button:hover,
.sp-button:hover {
  opacity: 0.7;
  cursor: pointer;
}
.back {
  background: rgb(170, 170, 170);
  opacity: 0.7;
  width: 50px;
  height: 50px;
  position: fixed;
  bottom: 90px;
  right: 40px;
}

/* main */
/* top */
#top {
  background: white;
  width: 100vw;
  height: auto;
  margin-top: 80px;
  position: relative;
}  
#top > div {
  margin: 0;
  position: absolute; 
  top: 40%; 
  left: 50% ; 
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%); 
  -ms-transform: translate(-50%, -50%);
}

/* menu1 */
#menu1 {
  background: rgb(252, 215, 93);
  padding-bottom: 20px;
  width: 100vw;
}
#menu1 > h2 {
  color: white;
  padding-top: 40px;
}
.main-button {
  background: tomato;
  width: 60vw;
  height: 50px;
  margin: 50px auto;    
  padding: 10px;
  border-radius: 10px;
}
.main-button:hover {
  cursor: pointer;
  opacity: 0.9;
}
.point {
  background: rgb(255, 226, 221);
  color: red;
  font-weight: bold;
  width: 80vw;
  margin:  20px auto;
  border-radius: 5px;
}

/* menu2 */
#menu2 {
  padding-top: 40px;
  width: 100vw;
}
#menu2 > h2 {
  margin-top: 0;
}
.line1 {
  color: red;
  font-weight: bold;
  font-size: 40px;
  margin-right: 30px;
}
.line2 {
  color: red;
  font-weight: bold;
  font-size: 40px;
  margin-left: 30px;
}

/* menu3 */
#menu3 {
  width: 100vw;
  background: rgb(252, 215, 93);
  padding: 40px 0;
}
.list {
  background: white;
  border: 3px solid rgb(255, 154, 87);
  border-radius: 10px;
  margin: 20px auto;
}

/* menu4 */
#menu4 {
  width: 100vw;
  position: relative;
}
.menu4 {
  margin: 0;
  position: absolute; 
  top: 50%; 
  left: 50% ; 
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%); 
  -ms-transform: translate(-50%, -50%);
}
.float {
  background: white;
  border: 3px solid rgb(255, 154, 87);
  margin: 10px auto;
}
.fa-3x {
  padding: 10px 0;
}

/* menu5 */
#menu5 {
  margin-top: 0;
  background: rgb(252, 215, 93);
  padding-top: 20px;
  padding-bottom: 40px;
}
.introduction {
  display: flex;
  margin: 10px;
  padding: 20px;
  background: rgba(248, 248, 248, 0.6);
  border-radius: 10px;
}
.icon {
  text-align: right;
  padding: 10px;
  margin: 10px;
}
.icon a {
  margin: 5px;
}
.icon a:hover {
  opacity: 0.8;
}

/* menu6 */
#menu6 {
  width: 100vw;
  height: 50vh;
  padding: 40px 0;
}

/* footer */
footer {
  background: rgb(136, 136, 136);
  height: 150px;
}
.fa-2x {
  color: black;
}
footer > p {
  margin: 0 auto;
}

@media screen and (max-width: 499px) {

  .br::after {
    content: "\A" ;
    white-space: pre;
  }

  /* header */
  .pc-button {
    display: none;
  }

  .list {
    width: 60vw;
    height: 200px;
    padding: 20px 30px;
  }

  .float {
    width: 60vw;
    border-radius: 50%;
    display: flex;
    text-align: center;
    padding: 10px 0 10px 25px;
  }

}

@media screen and (min-width: 500px) {

  /* header */
  .sp-button {
    display: none;
  }

  .list {
    width: 70vw;
    height: 100px;
    padding: 40px;
  }

  /* .b-float {
    display: flex;
  } */

  .float {
    width: 45vw;
    border-radius: 20px;
    margin: 10px;
  }

  .introduction {
    width: 60vw;
    height: auto;
    margin: 0 auto;
  }

}