/* author: Pooya Samimi */

body {
  background-color: #121212;
  color: #e5e5e5;
  font-family: "Vazirmatn", sans-serif;
  line-height: 1.8;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 1rem;
}

.rainbow-selection {
  max-width: 700px;
  text-align: center;
  font-size: 1.2rem;
}

/* default for safari browser*/
.rainbow-selection ::selection {
  background-color: #8884; /* fallback ساده */
  color: white;
}
.rainbow-selection ::-moz-selection {
  background-color: #8884;
  color: white;
}

/* color cycle */
.rainbow-selection > *:nth-child(7n + 1)::selection {
  background-color: #e63946cc;
  color: #fff;
}
.rainbow-selection > *:nth-child(7n + 2)::selection {
  background-color: #f77f00cc;
  color: #fff;
}
.rainbow-selection > *:nth-child(7n + 3)::selection {
  background-color: #fcbf49cc;
  color: #000;
}
.rainbow-selection > *:nth-child(7n + 4)::selection {
  background-color: #90be6dcc;
  color: #000;
}
.rainbow-selection > *:nth-child(7n + 5)::selection {
  background-color: #43aa8bcc;
  color: #000;
}
.rainbow-selection > *:nth-child(7n + 6)::selection {
  background-color: #577590cc;
  color: #fff;
}
.rainbow-selection > *:nth-child(7n + 7)::selection {
  background-color: #9d4eddcc;
  color: #fff;
}

/* firefox*/
.rainbow-selection > *:nth-child(7n + 1)::-moz-selection {
  background-color: #e63946cc;
  color: #fff;
}
.rainbow-selection > *:nth-child(7n + 2)::-moz-selection {
  background-color: #f77f00cc;
  color: #fff;
}
.rainbow-selection > *:nth-child(7n + 3)::-moz-selection {
  background-color: #fcbf49cc;
  color: #000;
}
.rainbow-selection > *:nth-child(7n + 4)::-moz-selection {
  background-color: #90be6dcc;
  color: #000;
}
.rainbow-selection > *:nth-child(7n + 5)::-moz-selection {
  background-color: #43aa8bcc;
  color: #000;
}
.rainbow-selection > *:nth-child(7n + 6)::-moz-selection {
  background-color: #577590cc;
  color: #fff;
}
.rainbow-selection > *:nth-child(7n + 7)::-moz-selection {
  background-color: #9d4eddcc;
  color: #fff;
}