@font-face {
    font-family: 'allerregular';
    src: url('../fonts/aller_rg-webfont.eot');
    src: url('../fonts/aller_rg-webfont.eot?#iefix') format('embedded-opentype'),
         url('../fonts/aller_rg-webfont.woff2') format('woff2'),
         url('../fonts/aller_rg-webfont.woff') format('woff'),
         url('../fonts/aller_rg-webfont.ttf') format('truetype'),
         url('../fonts/aller_rg-webfont.svg#allerregular') format('svg');
    font-weight: normal;
    font-style: normal;

  }
  header {
    position: fixed;
    top:0;
    left: 50%;
    transform: translate(-50%);
    height: 437px;
    width: 900px;
    background-color: #ccc;
    background-image:url(../images/_bground2.jpg);
    background-size: cover;
    font-family: allerregular, sans-serif;
    z-index: 5;
  }

  h1 {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: white;
    letter-spacing: 0.05em;
    padding-top: 160px;

  }

  h1 span{
    display: inline-block;
    padding: 0.1em;
    border-style:solid;
    border-width: 2px;
    /*outline: 1px solid black;*/

  }
  header nav {
    margin:165px 20px 0 0;
    width:100%;
    overflow: hidden;
  }
  header nav a{
    display: inline-block;
    text-align: center;
    width: 18%;
    color:rgb(0, 0, 0);
    color:rgba(0, 0, 0, 0.7);
    font-size: 24px;
    font-weight: 700;
  }

  h1:hover{
    color: white;
    color:rgba(255, 255, 255, 0.7);
  }

  nav a:hover{
      color: rgb(0, 0, 0);
      color: rgba(0, 0, 0, 1);
    }