:root {--blue: #4019ff;}
  * {box-sizing: border-box;outline: none;}

  body {
    margin: 0px;
    color: #000;
    font-family: 'Calibri';
    font-size: 17px;
    background-image: url("assets/images/bg-telegram-dark.jpg");
  }
  
  a {text-decoration: none;}
  
  input[type=number]::-webkit-inner-spin-button, 
  input[type=number]::-webkit-outer-spin-button { 
      -webkit-appearance: none;
      margin: 0;
  }

  #wrong {margin: 16px 0px;color: red;background: rgba(255,0,0, .1);padding: 2px 5px;border-radius: 4px;}

  #loader {
    height: 100vh;width: 100vw;
    position: fixed;top:0;
    background: rgba(255,255,255, .7);
    display: flex;align-items: center;
    justify-content: center;
  }

  .loader {
    width: 45px;
    aspect-ratio: 1;
    --c: no-repeat linear-gradient(#000000 0 0);
    background: 
      var(--c) 0%   50%,
      var(--c) 50%  50%,
      var(--c) 100% 50%;
    background-size: 20% 100%;
    animation: l1 .5s infinite linear;
  }
  @keyframes l1 {
    0%  {background-size: 20% 100%,20% 100%,20% 100%}
    33% {background-size: 20% 10% ,20% 100%,20% 100%}
    50% {background-size: 20% 100%,20% 10% ,20% 100%}
    66% {background-size: 20% 100%,20% 100%,20% 10% }
    100%{background-size: 20% 100%,20% 100%,20% 100%}
  }

  h1 {
    font-size: 50px;
    font-weight: bold;
  }

  button {
    color: #FFF;
    border: 0px solid transparent;
    margin: 32px auto;
    display: block;
    background: #041d47;
    font-size: 17px;
    padding: 6px 45px;
    border-radius: 32px;
  }