/* Custom Properties */
:root {
    --main-color: #ffffff;
    --main-modal-color: rgba(255, 255, 255);
    --second-color: #2B2B2B;
    --second-modal-color: rgba(43, 43, 43, .5);
    --tree-color: #000000;
    --tree-modal-color: rgba(0, 0, 0, .5);
  }
  
  html {
    box-sizing: border-box;
    font-family: 'Raleway', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--second-color);
    background-color: var(--main-modal-color);
  }
  
  *,
  *:after,
  *:before {
    box-sizing: inherit;
    padding: 0;
    margin: 0;
  }
  
  body {
    margin: 2rem auto;
    overflow-x: hidden;
    max-width: 800px;
  }
  
  a {
    font-weight: bold;
    color: var(--second-color);
    transition: all .3s ease-out;
  }
  
  a:hover {
    color: var(--second-modal-color);
  }
  
  p {
    padding: 1rem;
    font-size: 1.25rem;
    color: var(--tree-color);
  }
  
  ::selection {
    background-color: var(--second-color);
    color: var(--main-color);
  }
  
  .Header {
    display: flex;
    flex-direction: column;
    text-align: center;
  }
  
  .Header h1 { word-wrap: break-word; }
  
  .Header img {
    margin: 0 auto;
    display: block;
    max-width: 150px;
    border-radius: 50%;
  }
  
  .Header nav {
    padding: 2rem 0;
    display: flex;
    justify-content: space-evenly;
    font-size: 3rem;
  }
  
  .Main {
    position: relative;
    margin: 0 auto;
    padding-bottom: 56.25%; /* 16:9 */
  }
  
  .Main iframe {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
    }