body {
  color: #082b48;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  line-height: 1.5;
}

img {
  width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  color: #082b48;
}

a:hover {
  opacity: 0.7;
}
.container {
  width: 90%;
  max-width: 980px;
  margin: auto;
}
.clear::after {
  content: "";
  clear: both;
  display: block;
}
/*=========================
header
==========================*/
header {
  padding: 20px 0;
}

.header-left {
  float: left;
  font-weight: bold;
  font-size: 24px;
}
.header-right {
  float: right;
}

.header-nav-item {
  float: left;
  margin-left: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 36px;
}
/*************
top
*************/
.top {
  background-image: url(../img/main-vsual-nontitle.png);
  background-size: cover;
  padding: 80px;
}

.top-title {
  font-size: 48px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
}
.top-subtitle {
  font-size: 18px;
  text-align: center;
}

/*************
section共通クラス
*************/
.section {
  padding: 60px 0;
}

.section-title {
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
}

/*****
about
****/
.about-left {
  float: left;
  width: 48%;
}
.about-right {
  float: right;
  width: 48%;
}

/*****
course
****/
.course {
  background-color: #e3fcf4;
}
.course-wrapper {
  display: flex;

  justify-content: space-between;
}

.course-item {
  width: 30%;
}

/*****
contact
****/
.contact-message {
  text-align: center;
  margin-bottom: 20px;
}

input[type="email"],
input[type="text"] {
  width: 600px;
  border: 3px solid #d8d8d8;
  font-size: 18px;
  display: block;
  margin: auto;
  padding: 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.btn {
  padding: 20px 60px;
  display: inline-block;
  /*background-color: #082b48;*/
  color: #fff;
  font-size: 24px;
  font-weight: bold;
  border-radius: 4px;
  border: none;
}
.btn:hover {
  opacity: 0.7;
  cursor: pointer;
}

.btn-register {
  background-color: #ec6d64;
  display: block;
  margin: auto;
}

/*****
footer
****/

footer {
  background-color: #082b48;
  color: #fff;
  padding: 20px 0;
}
.copyright {
  font-size: 12px;
  float: right;
}

/*****
スマホ用
****/
@media only screen and (max-width: 767px) {
  .clear::after {
    content: none;
  }

  /*****
header用
****/
  .header-left {
    float: none;
    text-align: center;
  }
  .header-right {
    float: none;
  }
  .header-nav {
    display: flex;
    justify-content: space-between;
  }
  .header-nav-item {
    float: none;
    margin: 0;
  }

  /*****
top用
****/
  .top {
    padding: 120px 0;
  }
  .top-title {
    font-size: 32px;
  }
  .top-subtitle {
    font-size: 14px;
  }

  /*************
section共通クラス
*************/
  .section {
    padding: 80px 0;
  }

  .section-title {
    font-size: 24px;
    font-weight: bold;
  }
  .section p {
    font-size: 14px;
  }

  /*************
about共通クラス
*************/
  .about-left {
    float: none;
    width: 100%;
    margin-bottom: 10px;
  }
  .about-right {
    float: none;
    width: 100%;
  }
  /*************
course
  *************/
  .course-wrapper {
    flex-wrap: wrap;
  }

  .course-item {
    width: 100%;
    margin-bottom: 20px;
  }
  /*************
contact
*************/
  input[type="email"],
  input[type="text"] {
    width: 100%;
  }

  /*************
fotter
*************/
  .copyright {
    font-size: 10px;
    float: none;
    text-align: center;
  }
}