* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  outline: 0;
  font-family: var(--poppins_font);
}

:root {
  --poppins_font: "Poppins", sans-serif;
  --nunito: "Nunito", sans-serif;
}

html {
  font-size: 62.5%;
}

html,
body {
  height: 100vh;
  text-rendering: optimizelegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow: hidden;
  font-size: 1.6rem;
}

h1 {
  text-align: center;
  margin-top: 5rem;
}

.alternation {
  text-align: center;
  margin-top: 1rem;
  font-size: 2rem;
  font-weight: bolder;
}

.alternation span {
  color: red;
  transition: all 200ms ease-in;
}

.container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.square_line {
  display: flex;
  gap: 0;
}

.square {
  appearance: none;
  width: 10rem;
  height: 10rem;
  border: 1px solid #111;
  position: relative;
}

.square:checked::before {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 5rem;
  font-family: var(--nunito);
}

.markedX:checked::before {
  content: "X";
  color: #ff1e00;
}

.markedO:checked::before {
  content: "O";
  color: #1900ff;
}

.winner_screen,
.draw_screen {
  display: none;
}

.winner_screen.active,
.draw_screen.active {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 23;
  background-color: #fff;
  width: 100vw;
  height: 100vh;
}

.winner_screen.active h2,
.draw_screen.active h2 {
  text-align: center;
  margin-top: 5rem;
}

.winner_screen.active span {
  display: flex;
  justify-content: center;
  font-size: 34rem;
  font-family: var(--nunito);
}

.winner_screen.active img {
  position: absolute;
  top: 4rem;
  left: 50%;
  transform: translateX(-50%);
  width: 50rem;
}

.draw_screen.active img {
  width: 45rem;
  display: block;
  margin: auto;
}

.winner_screen.active button,
.draw_screen.active button {
  display: block;
  margin: auto;
  padding: 1rem 2rem;
  font-size: 2rem;
  border-radius: 0.5rem;
  border: 2px solid #000;
  background-color: #fff;
  cursor: pointer;
  transition: transform 200ms ease;
}

.winner_screen.active button:hover {
  transform: scale(1.2);
}