@font-face {
  font-family: 'Kiddosy Free Outline';
  src: url('caminho/para/a/fonte/Kiddosy-Free-Outline.woff2') format('woff2'),
  url('caminho/para/a/fonte/Kiddosy-Free-Outline.woff') format('woff');
}

body {
    overflow: hidden;
  }

  button.voltar{
    position: fixed;
    top: 30px;
    left: 30px;
    color: white;
    border: none; 
    background-color: transparent;
  }

  .container{
    width: 400px;
    margin-left: auto;
    margin-right: auto;
    justify-content: center;
    align-items: center;
  }
  #tetris {
    margin-top: 150px;
    width: 360px;
    border: 1px solid rgb(255, 255, 255); 
    padding: 20px;
  }
  #canvas {
    border: 1px solid white;
    width: 200px;
    height: 440px;
    background-color: #000000;
    position: relative;
    color: #fff;
  }
  #canvas h1 {
    margin: 0;
    padding: 0;
    text-align: center;
    font-size: 30px;
    padding-top: 200px;
  }
  .piece {
    border: 1px solid white;
    position: absolute;
  }
  
  #start{
    animation: blink .7s steps(2, start) infinite;
    background: #0f0020;
    border-radius: 10px;
    color: #ffffff;
    cursor: pointer;
    font-size: 28px;
  }
  
  .red{
    color: #f00000;
    text-align: center;
  }
  
  .square {
    position: absolute;
    width: 19px;
    height: 19px;
    border: 1px solid white;
  }
  .type0 {
    background-color: #a000f0;
  }
  .type1 {
    background-color: #00f0f0;
  }
  .type2 {
    background-color: #f0a000;
  }
  .type3 {
    background-color: #0000f0;
  }
  .type4 {
    background-color: #00f000;
  }
  .type5 {
    background-color: #f00000;
  }
  .type6 {
    background-color: #f0f000;
  }
  #next_shape {
    position: relative;
    background-color: #000;
    border: 1px solid white;
    width: 110px;
    height: 110px;
  }
  #info {
    border: 1px solid white;
    background-color: #000;
    color: #fff;
    float: right;
    width: 110px;
    height: 420px;
    padding: 10px;
  }
  .glow-on-hover {
    border: none;
    outline: none;
    color: #fff;
    background: transparent;
    cursor: pointer;
    position: relative;
    z-index: 0;
    border-radius: 100%;
    padding: 20px;
    font-family: 'Kiddosy Free Outline', sans-serif;
  }
  
  .glow-on-hover:before {
    content: '';
    background: linear-gradient(45deg, #ff0000, #ff7300, #fffb00, #48ff00, #00ffd5, #002bff, #7a00ff, #ff00c8, #ff0000);
    position: absolute;
    top: -2px;
    left:-2px;
    background-size: 400%;
    z-index: -1;
    filter: blur(5px);
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    animation: glowing 20s linear infinite;
    opacity: 0;
    transition: opacity .3s ease-in-out;
    border-radius: 10px;
  }
  
  .glow-on-hover:active {
    color: #000
  }
  
  .glow-on-hover:active:after {
    background: transparent;
  }
  
  .glow-on-hover:hover:before {
    opacity: 1;
  }
  
  .glow-on-hover:after {
    z-index: -1;
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: #111;
    left: 0;
    top: 0;
    border-radius: 10px;
  }
  .glow-on-hover:after {
      z-index: -1;
      content: '';
      position: absolute;
      width: 100%;
      height: 100%;
      background-color: rgb(3, 3, 3); /* Fundo transparente */
      left: 0;
      top: 0;
      border-radius: 10px;
    }