_page.scss

.container {
    width: 100%;
    padding: 0px;
}

.content {
  padding: 10px;
  margin-left:  auto;
  margin-right: auto;
  text-align: justify;
  min-height: 100vh;
}

.sidebar-left {
  display: flex;
  overflow-y: scroll;
  background-color: $bg-sidecar;
}

@media (min-width: $lt-width) {
  .container {
    width: $lt-width;
  }

  .content {
    margin-left: calc(#{$page-margin}*100%);
    width: calc(#{$lt-width} * 0.7);
  }

  .sidebar-left {
    position: fixed;
    top: 50px;
    bottom: 0px;
    width: calc(#{$lt-width} * #{$page-margin});
  }
}

@media (min-width: $lt-width) {
  .container {
    width: 100%;
  }

  .content {
    margin-left: calc(#{$page-margin}*100%);
    width: 70%;
  }

  .sidebar-left {
    position: fixed;
    top: 50px;
    bottom: 0px;
    width: calc(#{$page-margin}*100%);
  }
}

@media (min-width: $xl-width) {
  .container {
    width: $lg-width;
  }

  .content {
    margin-left: calc(#{$page-margin}*100%);
    width: calc(#{$lg-width} * 0.7);
  }

  .sidebar-left {
    position: fixed;
    top: 50px;
    bottom: 0px;
    width: calc(#{$lg-width} * #{$page-margin});
  }
}

@media (min-width: $qhd-width) {
  .container {
    width: $xl-width;
  }

  .content {
    margin-left: calc(#{$page-margin}*100%);
    width: calc(#{$xl-width} * 0.7);
  }

  .sidebar-left {
    position: fixed;
    top: 50px;
    bottom: 0px;
    width: calc(#{$xl-width} * #{$page-margin});
  }
}

@media (min-width: $wqhd-width) {
  .container {
    width: $qhd-width;
  }

  .content {
    margin-left: calc(#{$page-margin}*100%);
    width: calc(#{$qhd-width} * 0.7);
  }

  .sidebar-left {
    position: fixed;
    top: 50px;
    bottom: 0px;
    width: calc(#{$qhd-width} * #{$page-margin});
  }
}

@media (min-width: $uhd-width) {
  .container {
    width: $wqhd-width;
  }

  .content {
    margin-left: calc(#{$page-margin}*100%);
    width: calc(#{$wqhd-width} * 0.7);
  }

  .sidebar-left {
    position: fixed;
    top: 50px;
    bottom: 0px;
    width: calc(#{$wqhd-width} * #{$page-margin});
  }
}