Ionic subheader bar overlapping content

Question

In a view with header and subheader, subheader content overlaps the contents of the view.

• Header in slide menu

    <ion-nav-buttons side="left">
      <button class="button button-icon button-clear ion-navicon" menu-toggle="left" ng-hide="$exposeAside.active"></button>
    </ion-nav-buttons>
  </ion-nav-bar>
  
  <ion-nav-view name="menuContent" animation="slide-left-right"></ion-nav-view>
  

• Subheader in a view

<ion-header-bar align-title="center" class="bar bar-subheader custom bar-energized" ng-if="datos.subTitulo">
      <div class="buttons">
         <a class="ion-chevron-left" href="#/app/ranking/ubicacion/{{datos.divAnt}}" ng-if="datos.divAnt"></a>
      </div>
      <h2 class="subtitle">{{datos.subTitulo}}</h2>
      <div class="buttons">
         <a class="ion-chevron-right" href="#/app/ranking/ubicacion/{{datos.divSig}}" ng-if="datos.divSig"></a>
      </div>
</ion-header-bar>

Div buttons in subheader overlapping content, h2 show 100%. Something is missing in this code? Thanks

[EDIT] Rewrote the code to suit my needs: subheader smaller than the header with two links in the corners and a title.

<ion-header-bar align-title="center" class="bar-subheader subheader_custom bar-energized">
    <div class="button button-clear"> 
        <a class="icon ion-ios-arrow-back blanco" href="#/app/ranking/ubicacion/{{datos.divAnt}}" ng-if="datos.divAnt"></a>
    </div>
    <div class="h2 title title_custom">{{datos.subTitulo}}</div>
    <div class="button button-clear"> 
        <a class="icon ion-ios-arrow-forward blanco" href="#/app/ranking/ubicacion/{{datos.divSig}}" ng-if="datos.divSig"></a>
    </div>
</ion-header-bar>

Add this css:

.has-subheader {
    top: 70px;
}

.bar-subheader.subheader_custom {
    display: block;
    height: 26px;
    top: 44px;
}
.title.title_custom {
    font-size: 16px;
    font-weight: 300;
    height: 20px;
    left: 0;
    line-height: 20px;
    margin: 2px 10px 2px 10px;
    min-width: 24px;
    overflow: hidden;
    position: absolute;
    right: 0;
    text-align: center;
    text-overflow: ellipsis;
    top: 0;
    white-space: nowrap;
    z-index: 0;
}

Even buttons are not in line with the subheader title. Any ideas?

New status:

Answer 1

Make sure that the content view knows it needs to leave space for the subheaders by adding the CSS class has-subheader:

<ion-content class="has-header has-subheader">
</ion-content>

See http://ionicframework.com/docs/components/#subheader