body {
  color: #333;
  font-family: Arial, Helvetica Neue, Helvetica, sans-serif;
  font-size: 14px;
  line-height: 20px;
}

a {
  text-decoration: none;
}

.container {
  max-width: 100%;
  position: relative;
}

.body {
  background-color: #494444;
  display: block;
}

.section {
  flex-direction: column;
  justify-content: center;
  height: 100vh;
  display: flex;
  position: relative;
}

.list-keyboard {
  text-transform: uppercase;
  flex-direction: row;
  align-items: flex-start;
  margin-bottom: 0;
  padding-left: 0;
  font-family: Tahoma, Verdana, Segoe, sans-serif;
  list-style-type: none;
  display: flex;
}

.blackkey {
  z-index: 999;
  color: #fff;
  cursor: pointer;
  background-color: #121d4c;
  border-radius: 5px;
  flex-direction: row;
  justify-content: center;
  align-items: flex-end;
  width: 3.5rem;
  height: 8rem;
  margin-right: .5rem;
  padding-bottom: .5rem;
  display: flex;
  position: relative;
  top: 0;
  left: -2rem;
}

.blackkey:active {
  background-color: #08218f;
}

.whitekey {
  cursor: pointer;
  background-color: #ff0004;
  border-radius: 5px;
  justify-content: center;
  align-items: flex-end;
  width: 4rem;
  height: 12rem;
  margin-right: .5rem;
  padding-bottom: .5rem;
  display: flex;
}

.whitekey:active {
  background-color: #ffffa5;
}

.previous-is-blackkey {
  margin-left: -4rem;
}

.previous-is-whitekey {
  margin-left: 0;
}

.wrapper-keyboard {
  align-items: flex-start;
  display: flex;
}

.keys-styles {
  display: none;
}

.button-how-to {
  background-color: #ff0004;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  width: 8.5vw;
  height: 8.5vw;
  display: flex;
  position: absolute;
  inset: 2vw 2vw auto auto;
  overflow: hidden;
}

.text-how-to {
  color: #121d4c;
  text-align: center;
  letter-spacing: .125em;
  text-transform: uppercase;
  font-size: 1.5vw;
  line-height: 1;
  text-decoration: none;
}

.text-medium {
  color: red;
  margin-bottom: 5vw;
  font-size: 2vw;
  line-height: 1.5;
}

.text-code {
  background-color: #fff;
  padding-bottom: .25vw;
  padding-left: 1vw;
  padding-right: 1vw;
  display: inline-block;
}

.bold {
  font-weight: 600;
}

.wrapper-credits {
  justify-content: space-between;
  align-items: flex-end;
  padding-top: 10vw;
  padding-bottom: 2vw;
  line-height: 1.25;
  display: flex;
}

.text-credits {
  color: red;
  font-size: 1rem;
}

.link {
  text-decoration: underline;
}

.section-2 {
  position: relative;
}

.container-text {
  max-width: 90%;
  position: relative;
}

.link-2 {
  color: #000;
}

@media screen and (max-width: 767px) {
  .text-credits {
    font-size: .75rem;
  }
}

@media screen and (max-width: 479px) {
  .button-how-to {
    width: 17vw;
    height: 17vw;
  }

  .text-how-to {
    font-size: 3vw;
  }

  .text-medium {
    margin-bottom: 10vw;
    font-size: 5vw;
  }

  .wrapper-credits {
    flex-direction: column;
    align-items: flex-start;
  }

  .text-credits {
    padding-bottom: 5vw;
  }
}