style.css

:root {
  --background-color: 'white';
}

body {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  height: 100vh;
  width: 100vw;
  background-color: var(--background-color);
  mix-blend-mode: difference;
  background-repeat: no-repeat;
  background-size: cover;
}

@font-face {
  font-family: 'digital-7';
  src: url('./fonts/digital-7.regular.ttf');
}

.flex {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.game-wrapper {
  width: 100%;
}

.title {
  text-align: center;
  margin-top: 1%;
  margin-bottom: 2%;
}

.btn-wrapper {
  margin-bottom: 3%;
}

.new_game {
  margin-right: 15px;
}

.new_game, #celebrate {
  font-size: 16px;
  font-weight: 200;
  letter-spacing: 1px;
  padding: 13px 20px 13px;
  outline: 0;
  border: 1px solid black;
  cursor: pointer;
  position: relative;
  background-color: rgba(0, 0, 0, 0);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.new_game:after, #celebrate:after {
  content: "";
  background-color: #ffe54c;
  width: 100%;
  z-index: -1;
  position: absolute;
  height: 100%;
  top: 7px;
  left: 7px;
  transition: 0.2s;
}

.new_game:hover:after, #celebrate:hover:after {
  top: 0px;
  left: 0px;
}

.score {
  flex-direction: row;
  justify-content: space-between;
  font-family: digital-7;
  font-size: 50px;
  height: fit-content;
  width: 10%;
  margin-top: 2%;
  margin-bottom: -5%;
  z-index: 10;
}

.neonText {
  color: #fff;
  text-shadow:
    0 0 7px #fff,
    0 0 10px #fff,
    0 0 21px #fff,
    0 0 42px #0fa,
    0 0 82px #0fa,
    0 0 92px #0fa,
    0 0 102px #0fa,
    0 0 151px #0fa;
}

.score_left, .score_right {
  margin: 0;
}

.canvas-wrapper {
  flex-direction: row;
}

.controls_descr {
  padding: 7px 5px;
  border-radius: 15px;
  background-color: #D3D3D3;
}

.controls_left {
  margin-right: 25px;
}

.controls_right {
  margin-left: 25px;
}

.canvas {
  height: 450px;
  width: 900px;
  border: 2px solid white;
  background-color: #0661b2
}

.turn-message {
  display: none;
}

/* media */

@media screen and (max-width: 1085px) {

  .canvas-wrapper {
    width: 80%
  }

  .canvas {
    width: 80%;
    height: auto;
  }

  .score {
    margin-bottom: -7%;
  }
}

@media screen and (max-width: 768px) {

  .score {
    margin-bottom: -6%;
    font-size: 30px;
  }
}

@media screen and (max-width: 619px) {

  .canvas-wrapper {
    width: 90%;
  }

  .btn-wrapper {
    margin-bottom: 6%;
  }

  .score {
    margin-bottom: -6%;
    font-size: 20px;
  }
}

@media screen and (max-width: 530px) {
  .turn-message {
    display: flex;
  }

  .turn-title {
    width: 80%;
    text-align: center;
  }

  .game-wrapper {
    display: none;
  }
}