.school_1 {
  width: 120px;
  height: 120px;
  z-index: 4;
  position: relative;
  bottom: 280px;
  left: 140px;
}

.school_2 {
  width: 120px;
  height: 120px;
  z-index: 3;
  position: relative;
  top: 10px;
}

.school_3 {
  width: 110px;
  height: 110px;
  z-index: 3;
  position: relative;
  bottom: 15px;
  right: 25px;
}

#header {
  width: 1000px;
  margin: 10px auto;
  height: 160px;
}

.header-image {
  width: 25%;
}

.header-title {
  height: 60px;
  font-size: 45px;
  font-weight: bold;
  color: #003df0;
  line-height: 45px;
  margin-top: 20px;
}

.header-title-text {
  background-color: #003df0;
  color: white;
  width: 130px;
  height: 70px;
  padding: 5px 15px;
  border-radius: 10px;
  font-size: 60px;
  margin: 0 10px;
  transform: rotateZ(-5deg);
  line-height: 78px;
}

.header-title-text-under {
  width: 150px;
  margin-top: 20px;
  font-size: 70px;
}

.flex {
  display: flex;
}

.header-text {
  background-color: #003df0;
  color: white;
  margin: 0 auto;
  text-align: center;
  font-size: 20px;
}

.header-number {
  font-size: 30px;
}

.to-top {
  width: 60%;
  height: 30px;
  color: white;
  background-color: #003df0;
  text-align: center;
  border-radius: 10px;
  line-height: 30px;
  z-index: 3;
  position: relative;
  bottom: 160px;
  left: 140px;
}

.to-top-href {
  width: 20%;
}

.maru1 {
  width: 60px;
  height: 60px;
  border-radius: 30px;
  background-color: #6b8fff;
  z-index: 3;
  position: relative;
  top: 10px;
  left: 30px;
}

.maru2 {
  width: 40px;
  height: 40px;
  border-radius: 20px;
  background-color: #fee7f1;
  z-index: 3;
  position: relative;
  left: 100px;
  bottom: 25px;
}

.maru3 {
  width: 80px;
  height: 80px;
  border-radius: 40px;
  background-color: #003df0;
  z-index: 2;
  position: relative;
  left: 35px;
  bottom: 60px;
}

.maru4 {
  width: 100px;
  height: 100px;
  border-radius: 60px;
  background-color: #6b8fff;
  z-index: -1;
  position: relative;
  bottom: 100px;
  left: 55px;
}

.maru5 {
  width: 40px;
  height: 40px;
  border-radius: 20px;
  background-color: #fee7f1;
  z-index: 2;
  position: relative;
  left: 200px;
  bottom: 65px;
}

.maru6 {
  width: 100px;
  height: 100px;
  border-radius: 60px;
  background-color: #6b8fff;
  z-index: -1;
  position: relative;
  bottom: 100px;
  left: 200px;
}

#header-inner {
  width: 42%;
  margin-top: 10px;
}

.header-left {
  width: 27%;
}

.header-right {
  width: 29%;
}

.header-under-line {
  height: 10px;
  width: 100%;
  background-color: #003df0;
}