I get 2 scrollbars using MDL, how can I fix it?

Question

I get 2 scrollbars using google mdl. I have added my html below. How can i fix this? View code in codefee

<div class="mdl-grid">
    <div class="mdl-cell mdl-cell--8-col mdl-cell--8-col-desktop mdl-cell--12-col-tablet  mdl-cell--12-col-phone">
        <div class="mdl-shadow--2dp mdl-color--white mdl-cell mdl-cell--12-col"></div>
        <div class="mdl-shadow--2dp mdl-color--white mdl-cell mdl-cell--12-col"></div>
    </div>
    <div class="mdl-cell mdl-cell--4-col mdl-cell--4-col-desktop mdl-cell--4-col-tablet  mdl-cell--12-col-phone"></div>
</div>
</div>

Answer 1

There are a number of issues with your codec.

Multiple layouts

For some reason, it appears that your codefee had an extra layout. I assume it was a copy-paste error.

Nested mesh

, mdl-cell, mdl-grid, . , :

<div class="mdl-grid">
  <div class="mdl-cell mdl-grid mdl-cell--8-col mdl-cell--8-col-desktop mdl-cell--12-col-tablet  mdl-cell--12-col-phone">
    <div class="mdl-shadow--2dp mdl-color--white mdl-cell mdl-cell--12-col"></div>
    <div class="mdl-shadow--2dp mdl-color--white mdl-cell mdl-cell--12-col"></div>
  </div>
  <div class="mdl-cell mdl-grid mdl-cell--4-col mdl-cell--4-col-desktop mdl-cell--4-col-tablet  mdl-cell--12-col-phone"></div>
</div>

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