/* reset_CSS */
html, body, h1, h2, h3, h4, ul, ol, dl, li, dt, dd, p, div, span, img, a, table, tr, th, td {
  margin: 0;
  padding: 0;
  border: 0;
  font-weight: normal;
  font-size: 100%;
  vertical-align: baseline;
  box-sizing: border-box;
}
article, header, footer, aside, figure, figcaption, nav, section {
  display: block;
}
* {
  box-sizing: border-box;
}
a {
  text-decoration: none;
  color: inherit;
}
ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
img {
  max-width: 100%;
  height: auto;
}
button {
  all: unset;
  display: inline-block;
  padding: 8px 16px;
  background: #f5f5f5;
  border-radius: 4px;
}
input, textarea {
  margin: 0;
  padding: 0;
  border: none;
  outline: none;
  appearance: none;
}
html {
  font-family: noto, "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", Meiryo, メイリオ, Osaka, "MS PGothic", arial, helvetica, sans-serif;
  font-size: 100%;
}
#wrapper {
}
#contents {

}
.bold {
  font-weight: bold;
}
.center {
  text-align: center;
}
.center_flex {
  display: flex;
  align-items: center;
  justify-content: center;
}
.center_column {
  display: flex;
  flex-wrap: nowrap;
  flex-direction: column;
  align-items: center;
}
.center_between {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.clear {
  clear: both;
}
.mgt_10 {
  margin-top: 10px;
}
section {
}


/*///////////////////////////
// ヘッダー
///////////////////////////*/
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 10px 20px;
  z-index: 1000; 
}

img.log_img {
  width: 70px;
}
@media screen and (min-width: 576px) {
  img.log_img {
    width: 80px;
  }
}
@media screen and (min-width: 768px) {
  img.log_img {
    width: 90px;
  }
}
@media screen and (min-width: 992px) {
  img.log_img {
    width: 100px;
  }
}


/*///////////////////////////
// フッター
///////////////////////////*/
footer {
  margin: 50px 0;
}
.footer_contents {
  width: 100%;
  max-width: 700px;
  margin: 5%;
}
.footer_copyright {
  color: #888;
  font-size: 14px;
  text-align: center;
}