moodle_theme_ilb/scss/moodle/drawer.scss

/* Anchor link offset fix. This makes hash links scroll 60px down to account for the fixed header. */
$fixed-header-y: $navbar-height;

$drawer-width: 285px !default;
$drawer-padding-x: 20px !default;
$drawer-padding-y: 20px !default;
$drawer-offscreen-gutter: 20px !default;

:target::before {
    content: " ";
    display: block;
    height: ($fixed-header-y + 10px); /* fixed header height*/
    margin-top: -($fixed-header-y + 10px); /* negative fixed header height */
    width: 1px;
    pointer-events: none;
}

.pagelayout-embedded :target {
    padding-top: initial;
    margin-top: initial;
}

#nav-drawer.closed {
    left: -($drawer-width + $drawer-offscreen-gutter);
}
#page {
    margin-top: $navbar-height;
}

/* Use a variable for the drawer background colors. */
$drawer-bg: $gray-lighter !default;

[data-region="drawer"] {
    position: fixed;
    padding: $drawer-padding-x $drawer-padding-y;
    width: $drawer-width;
    top: $fixed-header-y;
    height: calc(100% - #{$navbar-height});
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: $zindex-dropdown - 1;
    background-color: darken($body-bg, 5%);
    -webkit-transition: right 0.5s ease, left 0.5s ease;
    -moz-transition: right 0.5s ease, left 0.5s ease;
    transition: right 0.5s ease, left 0.5s ease;
}
#nav-drawer {
    right: auto;
    left: 0;
}
#page {
    margin-top: $fixed-header-y;
}
.pagelayout-embedded #page {
    margin-top: 0;
}
body.drawer-ease {
    -webkit-transition: margin-left 0.5s ease, margin-right 0.5s ease;
    -moz-transition: margin-left 0.5s ease, margin-right 0.5s ease;
    transition: margin-left 0.5s ease, margin-right 0.5s ease;
}

body.drawer-open-left {
    @include media-breakpoint-up(md) {
        margin-left: $drawer-width;
    }
}
body.drawer-open-right {
    @include media-breakpoint-up(md) {
        margin-right: $drawer-width;
    }
}