@media all and (min-width: 1380px) {
  div.context_options_button {
    display: none;
  }
}

@media all and (max-width: 1380px) {
  div#header{
    min-width: 1024px;
  }

  div.main {
    width: calc(100% - 25px);
    min-width: 924px;
  }

  div.aside {
    display: none;
  }

  div.aside_visible  { 
    display: block;
    position: absolute;
    top: 41px;
    right: 0px;
    padding: 10px;
    background-color: #fff;
    padding-bottom: 0px;
    width: 380px;
    min-height: calc(100% - 50px);
    box-shadow: 1px 9px 6px 2px #333;
    z-index: 0;
    padding-bottom: 30px;
  }

  div.context_options_button {
    display: inline-block;
    border: 1px solid transparent;
    padding: 5px;
    position: relative;
  }
  div.context_options_button_activ {
    display: inline-block;
    background-color: #fff;
    border: 1px solid transparent;
    padding: 5px;
    z-index: 99;
    position: relative;
  }

  img.context_options_button {
    border: 0px;
    border-bottom: 1px solid transparent;
    margin: 0px;
    vertical-align: middle;
    z-index: 99;
  }
}

/* EOF */