The Select or Die (http://vst.mn/selectordie/) CSS converted to Sass.

selectordie.scss

/* ===========================================================
 *
 *  Name:          selectordie.css
 *  Updated:       2014-10-10
 *  Created by:    Per V @ Vst.mn
 *  What?:         Base CSS for Select or Die
 *
 *  Copyright (c) 2014 Per Vestman
 *  Dual licensed under the MIT and GPL licenses.
 *
 *  No, I don't usually comment my CSS, but in this
 *  case it might "help" someone.
 *
 *  Oddny | Cogs 'n Kegs
 * =========================================================== */

 /* ===========================================================
 *
 *  Conversion to Sass by Boots on 2016-2-12 (boots.media)
 *
 * =========================================================== */

 .sod_select {
    // The SoD - Please keep this first three lines intact,
    // otherwise all hell will break looooooose
    display: inline-block;
    position: relative;
    line-height: 1;

    @include background-image(linear-gradient(#f5f4f1, #cac7ba));
    border: 1px solid #c8c5b8;
    border-radius: 0.25em;
    color: #494948;
    cursor: default;
    font-size: 1em;
    outline: 0;
    outline-offset: -2px; /* Opera */
    padding: 1em;
    text-align: left;
    transition:
        border-color 200ms ease,
        box-shadow 200ms ease,
        color 200ms ease;
    width: 100%;

    &, * {
        -webkit-box-sizing: border-box;
           -moz-box-sizing: border-box;
                box-sizing: border-box;
     -webkit-touch-callout: none;
       -webkit-user-select: none;
          -moz-user-select: none;
           -ms-user-select: none;
               user-select: none;
    }

    /* Divider Bar */
    &::before {
        border-left: 1px solid #cac7ba;
        border-right: 1px solid #f5f4f1;
        content: ' ';
        height: 100%;
        right: 3em;
        position: absolute;
        top: 0;
        width: 1px;
    }

    /* Down arrow */
    &::after {
        color: #494948;
        content: "\25BC";
        font-size: 0.8em;
        position: absolute;
        right: 1.3em;
        top: 50%;
        transform: translateY(-50%);
    }

    /* Change the border color on hover, focus and when open */
    &:hover,
    &.open,
    &.focus { border-color: #8c8a81; }

    &.open { color: #919191; }
    &.focus { box-shadow: 0 0 5px rgba(0,0,0,.2); }

    /* When the entire SoD is disabled, go crazy! */
    &.disabled {
        border-color: #828282;
        color: #b2b2b2;
        cursor: not-allowed;
    }

    /* The "label", or whatever we should call it. Keep the first three lines for truncating. */
    .sod_label {
        display: block;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;

        padding-right: 15px;
    }

    .sod_prefix {
        /* Use this if you're using a prefix and want to style it */
     }
    .sod_placeholder {
        /* Use this if you're using a placeholder and want to style it */
    }



    /* Options list wrapper */
    .sod_list_wrapper {
        background: #ffffff;
        border-top: none;
        border: 1px solid #c8c5b8;
        border-radius: 0 0 0.25em 0.25em;
        color: $baseFont;
        display: none;
        font-weight: 400;
        height: auto;
        left: 0;
        position: absolute;
        top: 100%;
        width: 100%;
        z-index: 1;
    }

    /* Shows the option list (don't edit) */
    &.open .sod_list_wrapper { display: block;  }

    /* Don't display the options when  */
    &.disabled.open .sod_list_wrapper { display: none;  }

    /* When the option list is displayed above the SoD */
    &.above .sod_list_wrapper {
        border-bottom: none;
        border-top: 1px solid #c8c5b8;
        border-radius: 0.25em 0.25em 0 0;
        bottom: 100%;
        top: auto;
    }

    /* Options list container */
    .sod_list {
        display: block;
        overflow-y: auto;
        padding: 0;
        margin: 0;
    }

    /* All the options. Keep the first three lines for truncating... */
    .sod_option {
        display: block;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;

        position: relative;
        padding: 10px 10px;
        list-style-type: none;
    }

    /* Optgroups */
    .sod_option.optgroup,
    .sod_option.optgroup.disabled {
        background: inherit;
        color: #939393;
        font-size: 10px;
        font-style: italic;
    }

    /* Children of an optgroup */
    .sod_option.groupchild { padding-left: 20px; }

    /* Used together with placeholderOption / data-placeholder-option */
    .sod_option.is-placeholder {
        display: none;
    }

    /* Disabled option */
    .sod_option.disabled {
        background: inherit;
        color: #cccccc;
    }

    /* Hover state for options, also used when a user uses his/hers up/down keys */
    .sod_option.active {
        background: #f7f7f7;
        color: #333333;
    }

    /*Make room for the check mark */
    .sod_option.selected {
        font-weight: 700;
        padding-right: 25px;
    }

    /* Displays a check mark for the selected option */
    .sod_option.selected:before {
        content: "";
        position: absolute;
        right: 10px;
        top: 50%;
        -webkit-transform: translateY(-50%);
            -ms-transform: translateY(-50%);
                transform: translateY(-50%);
        display: inline-block;
        color: #808080;
        height: 9px;
        width: 10px;
        background: url(data:image/svg+xml;base64,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);
    }

    /* Add a .no_highlight class to you SoD to hide the check mark and don't bold the option */
    &.no_highlight .sod_option.selected { font-weight: 300; }
    &.no_highlight .sod_option.selected:before { display: none; }

    .sod_option.link {
        /* If data-link is set on a specific option */
    }
    .sod_option.linkexternal {
        /* If data-link-external is set on a specific option */
    }



    /* Hide native select */
    select { display: none !important; }

    /* The native select in touch mode. Keep this first line. Sorry, keep everything. */
    &.touch select {
        -webkit-appearance: menulist-button;

        position: absolute;
        top: 0;
        left: 0;
        display: block !important;
        height: 100%;
        width: 100%;
        opacity: 0;
        z-index: 1;
    }
}