body{  
  background: #F6FFF3;
}

.wrapper{
  background-color: #F6FFF3;
  margin: 0 auto;
  width:1280px;
}
.title-box{
  display: flex;
  align-items: flex-start;
  justify-content: center;
  position: relative;
}
.icon-img{
  width: 300px;
}
.ouyou-img{
  width: 100%;
}
.navigation-box{
  text-align: center;
}
.navigation-txt-img{
  width: 600px;
}
.navigation-content{
  text-align:center;
  margin: 20px auto 100px;
}
.navigation-small-box{
  display: flex;
  justify-content: center;
}
.challenge-ttl-img{
  width: 460px;
  margin: 20px;
}
.challenge-box{
  text-align:center;
  width: 1000px;
  margin: 0 auto 170px;
}
.challenge-box-ttl{
  position: relative;
  text-align: left;
}
.challenge-box-ttl-img{
  width: 500px;
}
.challenge-content{
  width: 1000px;
  margin-top: 30px;
}
.challenge-last-content{
  width: 1000px;
  margin-top: 30px;
  margin-bottom: 40px;
}

.button-box {
  width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
}

.button-btn {
  width: 220px;
  margin: 50px 0px;
}