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                <nav class="navbar navbar-default navbar-fixed-top">
    <div class="container-fluid">
      <div class="navbar-header">
      </div>
      <ul class="nav navbar-nav">
        <li><a href="#offset-anchor">Offset Anchor</a></li>
        <li><a href="#offset-anchor-with-padding">Offset Anchor With Padding</a></li>
        <li><a href="#default-anchor">Default Anchor</a></li>
      </ul>
    </div>
  </nav>

  <div class="container">
    <div class="row">
      <div class="col-md-6 col-md-offset-3">
        <!-- start slipsum code http://slipsum.com/ -->
        <h1 id="offset-anchor">Offset Anchor</h1>
        <p>
          You think water moves fast? You should see ice. It moves like it has a mind. Like it knows it killed the world once and got a taste for murder. After the avalanche, it took us a week to climb out. Now, I don't know exactly when we turned on each other, but I know that seven of us survived the slide... and only five made it out. Now we took an oath, that I'm breaking now. We said we'd say it was the snow that killed the other two, but it wasn't. Nature is lethal but it doesn't hold a candle to man.
        </p>
        <p>
          Well, the way they make shows is, they make one show. That show's called a pilot. Then they show that show to the people who make shows, and on the strength of that one show they decide if they're going to make more shows. Some pilots get picked and become television programs. Some don't, become nothing. She starred in one of the ones that became nothing.
        </p>
        <p>
          Now that we know who you are, I know who I am. I'm not a mistake! It all makes sense! In a comic, you know how you can tell who the arch-villain's going to be? He's the exact opposite of the hero. And most times they're friends, like you and me! I should've known way back when... You know why, David? Because of the kids. They called me Mr Glass.
        </p>
        <p>
          Do you see any Teletubbies in here? Do you see a slender plastic tag clipped to my shirt with my name printed on it? Do you see a little Asian child with a blank expression on his face sitting outside on a mechanical helicopter that shakes when you put quarters in it? No? Well, that's what you see at a toy store. And you must think you're in a toy store, because you're here shopping for an infant named Jeb.
        </p>
        <h1 id="offset-anchor-with-padding">Offset Anchor With Padding</h1>
        <p>
          You think water moves fast? You should see ice. It moves like it has a mind. Like it knows it killed the world once and got a taste for murder. After the avalanche, it took us a week to climb out. Now, I don't know exactly when we turned on each other, but I know that seven of us survived the slide... and only five made it out. Now we took an oath, that I'm breaking now. We said we'd say it was the snow that killed the other two, but it wasn't. Nature is lethal but it doesn't hold a candle to man.
        </p>
        <p>
          Well, the way they make shows is, they make one show. That show's called a pilot. Then they show that show to the people who make shows, and on the strength of that one show they decide if they're going to make more shows. Some pilots get picked and become television programs. Some don't, become nothing. She starred in one of the ones that became nothing.
        </p>
        <p>
          Now that we know who you are, I know who I am. I'm not a mistake! It all makes sense! In a comic, you know how you can tell who the arch-villain's going to be? He's the exact opposite of the hero. And most times they're friends, like you and me! I should've known way back when... You know why, David? Because of the kids. They called me Mr Glass.
        </p>
        <p>
          Do you see any Teletubbies in here? Do you see a slender plastic tag clipped to my shirt with my name printed on it? Do you see a little Asian child with a blank expression on his face sitting outside on a mechanical helicopter that shakes when you put quarters in it? No? Well, that's what you see at a toy store. And you must think you're in a toy store, because you're here shopping for an infant named Jeb.
        </p>
        <h1 id="default-anchor">Default Anchor</h1>
        <p>
          You think water moves fast? You should see ice. It moves like it has a mind. Like it knows it killed the world once and got a taste for murder. After the avalanche, it took us a week to climb out. Now, I don't know exactly when we turned on each other, but I know that seven of us survived the slide... and only five made it out. Now we took an oath, that I'm breaking now. We said we'd say it was the snow that killed the other two, but it wasn't. Nature is lethal but it doesn't hold a candle to man.
        </p>
        <p>
          Well, the way they make shows is, they make one show. That show's called a pilot. Then they show that show to the people who make shows, and on the strength of that one show they decide if they're going to make more shows. Some pilots get picked and become television programs. Some don't, become nothing. She starred in one of the ones that became nothing.
        </p>
        <p>
          Now that we know who you are, I know who I am. I'm not a mistake! It all makes sense! In a comic, you know how you can tell who the arch-villain's going to be? He's the exact opposite of the hero. And most times they're friends, like you and me! I should've known way back when... You know why, David? Because of the kids. They called me Mr Glass.
        </p>
        <p>
          Do you see any Teletubbies in here? Do you see a slender plastic tag clipped to my shirt with my name printed on it? Do you see a little Asian child with a blank expression on his face sitting outside on a mechanical helicopter that shakes when you put quarters in it? No? Well, that's what you see at a toy store. And you must think you're in a toy store, because you're here shopping for an infant named Jeb.
        </p>
        <!-- end slipsum code -->
      </div>
    </div>
  </div>
            
          
!
            
              body {
  padding-top: 60px;
}

@mixin anchor-offset($offset, $padding-top:false) {
  border-top: $offset solid transparent;
  margin-top: -$offset;

  // Contain the elements background color/image
  -webkit-background-clip: padding-box;
  -moz-background-clip: padding;
  background-clip: padding-box;

  // This is the clearfix
  zoom: 1;
  &:before,
  &:after {
    content: " ";
    display: table;
  }
  &:after {
    clear: both;
  }

  // We can substitute padding top for the margin top we will be replacing
  @if $padding-top {
    padding-top: $padding-top;
  }
}


#offset-anchor {
  @include anchor-offset(70px);
}

#offset-anchor-with-padding {
  @include anchor-offset(70px,30px);
}
            
          
!
999px
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