/* .dev_header{
  width: 100%;
  height: 100px;
  position:relative;
} */
*{
  margin : 0;
  padding : 0;
}

svg {
 fill: currentColor;
}

nav ul{
  display: table;
  margin: 0 auto;
  padding: 0 ;
  width: 50%;
  text-align: center;
  }
  nav li{
  display: table-cell;
  min-width: 50px;
  font-size: 25px;
  }
  nav a{
  display: block;
  width: 100%;
  text-decoration: none;
  color: #555;
  padding-bottom: 5px;
  }
  nav li.current{
  border-bottom: 3px solid #92D050;
  }
  nav li:hover{
  color: #E7DA66;
  border-bottom: 3px solid #F0E475;
  }


.site_title{
  margin-top: 2px;
  margin-bottom: 2px;
  font-family: 'Impact';
  color: #707070;
  font-size:100px;
  text-align: center;
}

.header_img {
 width: 100%;
 height: 330px;
 object-fit: cover;
}


.text-image p {
  position: absolute;
  top: 25%;
  left: 3%;
  font-size: 70px;
  font-family: 'Book Antiqua';
  color: #ffffff;
}

.flex_test-box {
   margin-right: 10px;
   margin-left: 80px;
   background-color:white;     /* 背景色指定 */
   padding:  10px;             /* 余白指定 */
   display: flex;              /* フレックスボックスにする */
   align-items:stretch;        /* 縦の位置指定 */
   justify-content: space-between;
}

.flex_test-item {
   padding: 10px;
   color: black;               /* 文字色 */
   margin:  10px;              /* 外側の余白 */
   border-radius:  5px;        /* 角丸指定 */
   width: 24%;                 /* 幅指定 */
}

.container_heading{
 font-size: 30px;
 font-weight: bold;
 color: #707070;
}

.container_introduce{
 font-size: 24px;
 color: #707070;
}


.click_btn{
 appearance: none;
 border: 0;
 border-radius: 5px;
 background: #4676D7;
 color: #fff;
 padding: 8px 16px;
 margin-top: 10px;
 margin-left: 90px;
 margin-bottom: 15px;
 font-size: 25rpx;
}

footer {
  width: 100%;
  height: 5px; 
  text-align: center;
  padding: 40px 0;
  background-color: #cab64a;
}