// Header --------------------------------------------------------------------

// Full width wrapper
#head {
  height: 65px;
  border-top: 5px solid #105AAF;
  background: url("@{imgPath}/blocks/header/header-bg.png") repeat-x;

  // Content container
  & > header {
    .container;
  }

  // Logo
  #circle {
    .column(3);
    margin: 9px 0;

    a {
      .ir;
      width: 182px;
      height: 48px;
      margin: 0;
      background: url("@{imgPath}/blocks/sprite.png") no-repeat -2px 0;
    }
  } // /Logo

  // Navigation
  nav {
    .column(7);
    .push(2);
    margin-top: 25px;
    float: right;

    ul {
      float: right;
    }

    li {
      display: inline;
      margin: 0 0 0 2.3em; /* 40px */
      text-align: right;
    }

    a {
      color: #105AAF;
      font-family: "Myriad", sans-serif;
      font-weight: 600;
      text-decoration: none;
      font-size: 16px;

      &:visited { color: #105AAF; }

      &:hover, &:active {
        color: #023066;
        text-shadow: 0 0 8px hsla(0, 0, 60%, 0.2);
        .transition(all 300ms ease-in-out);
      }

    }
  } // /Navigation
}

// Header --------------------------------------------------------------------

// Full width wrapper
#head {
  height: 65px;
  border-top: 5px solid #105AAF;
  background: url("@{imgPath}/blocks/header/header-bg.png") repeat-x;

  // Content container
  & > header {
    .container;
  }

  // Logo
  #circle {
    margin: 9px 0;

    a {
      .hide-text;
      width: 182px;
      height: 48px;
      margin: 0;
      background: url("@{imgPath}/blocks/sprite.png") no-repeat -2px 0;
    }
  } // /Logo

  // Navigation
  nav {
    margin-top: 25px;
    float: right;

    ul {
      float: right;
    }

    li {
      display: inline;
      margin: 0 0 0 2.3em; /* 40px */
      text-align: right;
    }

    a {
      color: #105AAF;
      font-family: "Myriad", sans-serif;
      font-weight: 600;
      text-decoration: none;
      font-size: 16px;

      &:visited { color: #105AAF; }

      &:hover, &:active {
        color: #023066;
        text-shadow: 0 0 8px hsla(0, 0, 60%, 0.2);
        .transition(all 300ms ease-in-out);
      }

    }
  } // /Navigation
}

Remove scaffolding mixins Update with bootstrap mixing
Remove scaffolding mixins
Update with bootstrap mixing
