@charset "UTF-8";
body {
  font-family: "Kameron", "Noto Sans JP", sans-serif;
}

.flex, .header__nav {
  display: flex;
  flex-direction: column;
}

.content-width, .header__inner, .chord-flashcards__inner {
  width: 75%;
  margin: 0 auto;
  max-width: 800px;
}

body {
  background-color: rgb(15, 152, 185);
}

#container {
  position: relative;
  z-index: 10;
  background: rgb(15, 152, 185);
  background-color: rgb(15, 152, 185);
}

#main-content {
  position: relative;
  z-index: 0;
}

main {
  position: relative;
  z-index: -1;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 75px;
  display: flex;
  align-items: center;
  z-index: 100;
  background-color: rgb(255, 215, 0);
}
.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header__nav {
  justify-content: space-between;
  align-items: center;
  text-align: center;
}
.header__ul {
  display: flex;
  align-items: center;
  list-style: none;
  padding: 0;
}
.header__ul i {
  margin: 5px;
}
.header__ul a,
.header__ul a:visited,
.header__ul a:hover,
.header__ul a:active {
  color: inherit;
}
.header__li {
  margin-left: 3px;
}
.header .logo {
  font-weight: bold;
}
@media screen and (min-width: 200px) {
  .header .logo {
    font-size: 16px;
  }
}
@media screen and (min-width: 600px) {
  .header .logo {
    font-size: 34px;
  }
}
@media screen and (min-width: 960px) {
  .header .logo {
    font-size: 46px;
  }
}
@media screen and (min-width: 1280px) {
  .header .logo {
    font-size: 48px;
  }
}

.message {
  max-width: 800px;
  padding-top: 82.5px;
  margin: 0 auto;
  margin-bottom: -20px;
}
.message__inner {
  position: relative;
}
@media screen and (min-width: 200px) {
  .message__inner {
    font-size: 0.65em;
  }
}
@media screen and (min-width: 600px) {
  .message__inner {
    font-size: 0.75em;
  }
}
@media screen and (min-width: 960px) {
  .message__inner {
    font-size: 1em;
  }
}
@media screen and (min-width: 960px) {
  .message__inner {
    font-size: 1em;
  }
}
.message__inner #resizable-iframe {
  width: 200vw;
  height: 12.075vw;
  border: none; /* 枠線を削除 */
  overflow: hidden; /* スクロールバーを非表示にする */
}
@media screen and (orientation: portrait) {
  .message__inner #resizable-iframe {
    height: 30vw;
    width: 50vw;
  }
}
.message__content-section {
  display: block;
  font-weight: bold;
  border-bottom: double;
}
.message__content-en {
  display: block;
  line-height: 1.05em;
  margin-top: 7px;
  margin-left: 5px;
  margin-right: 5px;
  font-size: 1.13em;
}
.message__content-jp {
  display: block;
  line-height: 1.25em;
  margin-top: 1px;
  margin-left: 5px;
  margin-right: 5px;
  font-size: 1em;
}

.jp-title {
  color: whitesmoke;
  margin-top: 25px;
}

.en-title {
  color: whitesmoke;
  margin-bottom: 0px;
}

.chord-flashcards {
  max-width: 800px;
  margin: 0 auto;
  margin-top: 35px;
}
@media screen and (min-width: 200px) {
  .chord-flashcards {
    font-size: 0.62em;
  }
}
@media screen and (min-width: 600px) {
  .chord-flashcards {
    font-size: 0.72em;
  }
}
@media screen and (min-width: 960px) {
  .chord-flashcards {
    font-size: 1em;
  }
}
@media screen and (min-width: 1280px) {
  .chord-flashcards {
    font-size: 1em;
  }
}
.chord-flashcards__inner {
  display: flex;
  justify-content: space-evenly;
  flex-wrap: wrap;
  position: relative;
  padding-top: 10px;
}
.chord-flashcards__inner li {
  max-width: 800px;
  margin-top: 2.5px;
  margin-bottom: 6px;
  list-style: none;
}
.chord-flashcards__inner li a {
  color: navy;
  text-decoration: none;
}
.chord-flashcards__inner .resizable-iframe {
  width: 100vw;
  height: 42.8571428571vw; /* デスクトップでは21:9 */
  max-width: 910px;
  max-height: 360px;
}
@media (max-width: 768px) {
  .chord-flashcards__inner .resizable-iframe {
    width: 70vw;
    height: 52.5vw; /* スマホでは4:3 */
  }
}
@media (max-width: 480px) {
  .chord-flashcards__inner .resizable-iframe {
    width: 80vw;
    height: 60vw; /* スマホでは4:3 */
  }
}
.chord-flashcards__content-section {
  display: block;
  font-weight: bold;
  border-bottom: double;
}
.chord-flashcards__content-jp {
  display: block;
  line-height: 1.35em;
  margin-top: 7px;
  margin-left: 5px;
  margin-right: 5px;
  font-size: 1em;
}
.chord-flashcards__content-en {
  display: block;
  line-height: 1.05em;
  margin-top: 7px;
  margin-left: 5px;
  margin-right: 5px;
  font-size: 1.13em;
}
.chord-flashcards__item {
  justify-content: space-between;
  width: 250px;
  height: 150px;
  padding-top: 2px;
  background-color: white;
  border: 1px solid #212121;
  border-radius: 10px;
  box-shadow: 0 7px #212121;
  transition: all 0.1s ease;
}
@media screen and (min-width: 200px) {
  .chord-flashcards__item {
    width: 100px;
    height: 70px;
  }
}
@media screen and (min-width: 600px) {
  .chord-flashcards__item {
    width: 175px;
    height: 95px;
  }
}
@media screen and (min-width: 960px) {
  .chord-flashcards__item {
    width: 250px;
    height: 140px;
  }
}
@media screen and (min-width: 1280px) {
  .chord-flashcards__item {
    width: 250px;
    height: 140px;
  }
}
.chord-flashcards__item:hover {
  text-decoration: none;
  color: rgb(15, 152, 185);
  font-weight: bold;
  border-radius: 10px;
}
.chord-flashcards__item:active {
  color: rgb(15, 152, 185);
  transform: translateY(3px);
  box-shadow: none !important;
}
.chord-flashcards__item-unavailable {
  justify-content: space-between;
  width: 250px;
  height: 150px;
  margin-bottom: 5px;
  background-color: gray;
}
@media screen and (min-width: 200px) {
  .chord-flashcards__item-unavailable {
    width: 100px;
    height: 70px;
  }
}
@media screen and (min-width: 600px) {
  .chord-flashcards__item-unavailable {
    width: 175px;
    height: 100px;
  }
}
@media screen and (min-width: 960px) {
  .chord-flashcards__item-unavailable {
    width: 250px;
    height: 150px;
  }
}
@media screen and (min-width: 1280px) {
  .chord-flashcards__item-unavailable {
    width: 250px;
    height: 150px;
  }
}
.chord-flashcards__exercise {
  text-align: center;
  margin-top: 5px;
  font-size: 32px;
}
.chord-flashcards__staff-notation {
  border: 0.75px solid #000;
  margin: 0 auto;
  background-color: black;
}
@media screen and (min-width: 200px) {
  .chord-flashcards__staff-notation {
    width: 80px;
    height: 0.5px;
    margin-top: 5px;
  }
}
@media screen and (min-width: 600px) {
  .chord-flashcards__staff-notation {
    width: 150px;
    height: 0.5px;
  }
}
@media screen and (min-width: 960px) {
  .chord-flashcards__staff-notation {
    width: 200px;
    height: 1px;
    margin-top: 8px;
  }
}
@media screen and (min-width: 1280px) {
  .chord-flashcards__staff-notation {
    width: 200px;
    height: 1.5px;
  }
}
@media screen and (min-width: 200px) {
  .chord-flashcards__type {
    font-size: 0.35em;
    padding-top: 1.5px;
    margin-bottom: -1.5px;
  }
}
@media screen and (min-width: 600px) {
  .chord-flashcards__type {
    font-size: 0.65em;
    padding-top: 5px;
    margin-bottom: -5px;
  }
}
@media screen and (min-width: 960px) {
  .chord-flashcards__type {
    font-size: 0.95em;
    padding-top: 10px;
    margin-bottom: -10px;
  }
}
@media screen and (min-width: 1280px) {
  .chord-flashcards__type {
    font-size: 0.95em;
    padding-top: 10px;
    margin-bottom: -10px;
  }
}
.chord-flashcards a {
  text-decoration: none;
  color: black;
}
.chord-flashcards__content-jp {
  display: block;
  line-height: 1.35em;
  margin-top: 7px;
  margin-left: 5px;
  margin-right: 5px;
  font-size: 1em;
}
.chord-flashcards__content-en {
  display: block;
  line-height: 1.05em;
  margin-top: 7px;
  margin-left: 5px;
  margin-right: 5px;
  font-size: 1.13em;
}/*# sourceMappingURL=style.css.map */