diff --git a/css/style.css b/css/style.css
index 64e9cb2..00b532e 100644
--- a/css/style.css
+++ b/css/style.css
@@ -60,6 +60,30 @@
   font-size: 1.1rem;
   vertical-align: super; }
 
+/* popup container */
+.popup {
+  position: relative;
+  display: inline-block;
+  border-bottom: 1px dotted black;
+  /* If you want dots under the hoverable text */ }
+
+/* popup text */
+.popup .popuptext {
+  visibility: hidden;
+  width: 120px;
+  background-color: black;
+  color: #fff;
+  text-align: center;
+  padding: 5px 0;
+  border-radius: 6px;
+  /* Position the popup text - see examples below! */
+  position: absolute;
+  z-index: 1; }
+
+/* Show the popup text when you mouse over the popup container */
+.popup:hover .popuptext {
+  visibility: visible; }
+
 /*on-scroll menu */
 .fixed-header-enabled.onscroll .header-container ul.menu {
   text-align: right; }
@@ -142,4 +166,4 @@ details#journal-article-text-tab img,
 .site-name {
   font-size: 12rem; }
 
-/*# sourceMappingURL=data:application/json;charset=utf8;base64,{"version":3,"file":"style.css","sources":["style.scss","_lp-preview-grid.scss","_lp-hero.scss","_article-pages.scss"],"sourcesContent":["//imports\n@import 'lp-preview-grid';\n@import 'lp-hero';\n@import 'article-pages';\n\n/*on-scroll menu */\n.fixed-header-enabled.onscroll .header-container ul.menu {\n  text-align: right;\n}\n\n\n\n\n/*================================================*/\n\n/*change header title fontsize*/\n.col-md-12 .site-name a {\n  font-size: 40px;\n}\n\n.header-top__container {\n  padding: 60px 0 55px;\n}\n\n/*change padding above content*/\n.main-content__section, .sidebar__section {\n  padding: 60px 0 70px;\n}\n\n\n/*modify issue info on landing page*/\n.path-frontpage .layout.layout--twocol-bricks {\n  display: block;\n}\n.path-frontpage .block-region-second-above {\n  display: flex;\n  justify-content: flex-start;\n  font-size: 1.8rem;\n}\n.path-frontpage .block-region-second-above > * {\n  margin-right: 1rem;\n  display:flex;\n}\n.path-frontpage .block-region-second-above > .block-entity-fieldnodetitle::after{\n  content: \",\";\n}\n.path-frontpage .block-region-second-above > .block-entity-fieldnodefield-issue-year::after{\n  content: \",\";\n}\n\n\n.path-frontpage .block-region-second-above .field--name-field-issue-number {\n  display:flex;\n}\n\n/*tweak images added to articles*/\ndetails#journal-article-text-tab img,\n.path-frontpage .node--view-mode-teaser img {\n  border: 1px solid #ccc;\n  padding: 4px;\n  width: 200px;\n  float: left;\n  margin-right: 1rem;\n  margin-top: 1rem;\n}\n.field__label {\n  /*font-family: 'Merriweather', Georgia, Times New Roman, Serif;*/\n  /*font-family: 'Merriweather', Georgia, Times New Roman, Serif;*/\n  /*font-family: 'Merriweather', Georgia, Times New Roman, Serif;*/\n  font-family: 'Libre Baskerville', serif;\n}\n.field--name-field-issue-number .field__label {\n  font-family: inherit;\n  font-weight: initial;\n}\n.path-frontpage .node--view-mode-teaser {\n  padding: 0 0 30px 0;\n  margin-bottom: 30px;\n}\n\n\n.logo {\n  width:110px;\n}\n/*headings*/\n.hff-01 h1,\n.hff-01 h2,\n.hff-01 h3,\n.hff-01 h4,\n.hff-01 h5,\n.hff-01 h6,\n.hff-01 .tp-caption__title,\n.hff-01 .tp-caption__subtitle,\n.sff-01 .site-name,\n.slff-01 .site-slogan,\n.hff-01 .nav-tab__title {\n  font-family: 'Libre Baskerville', Georgia, Times New Roman, Serif;\n}\n.site-name {\n  font-size:12rem;\n}\n","\n/*====lp article preview cards==================*/\n.preview-card__grid-row {\n  display: flex;\n  justify-content: space-between;\n}\n.preview-card {\n  box-shadow: 0 2px 14px rgba(100, 100, 100, 0.1), 0 2px 2px rgba(100, 100, 100, 0.1);\n  border: 1px solid #e4e4e4;\n}\n.preview-card {\n  margin: 0 1em 2em 1em;\n  height: 250px\n}\n.preview-card:last-child {\n\n  margin: 0 0 2em 1em;\n\n}\n.preview-card:first-child {\n\n  margin: 0 1em 2rem 0;\n\n}\n.preview-card__caption {\n  margin: 10px;\n}\n\n\n","\n/*==========Landing Page Hero Image===========*/\n\n\n.hero {\n  background: blue;\n  background: url(../img/DS2_2648.jpg);\n  background-size: cover;\n  background-repeat: no-repeat;\n  background-position: center;\n  position: relative;\n  height: 250px;\n  display: flex;\n  align-items: center;\n}\n\n\n",".article-title-banner {\n    //display:none;\n    border: 1px solid #ccc;\n}\n.field--name-field-journal-article-abstract .field__label {\n    font-size: 2rem;\n}\n.node--type-journal-article {\n    .field--name-body figure {\n        margin-left: initial;\n        margin-right: initial;\n        float: left;\n        img {\n            border: 1px solid #ccc;\n            padding: 4px;\n            width: 200px;\n            float: left;\n            margin-right: 1rem;\n            margin-top: 1rem;\n        }\n    }\n    //footnotes\n    a[id^=\"footnote\"] {\n        border: 1px solid #5d5d5d;\n        background: #5d5d5d;\n        color: #fff;\n        border-radius: 4px;\n        text-decoration: none;\n        padding: 2px 3px;\n        font-size:1.1rem;\n        vertical-align:super;\n    }\n}\n"],"names":[],"mappings":"ACCA,kDAAkD;AAClD,AAAA,uBAAuB,CAAC;EACtB,OAAO,EAAE,IAAI;EACb,eAAe,EAAE,aAAa,GAC/B;;AACD,AAAA,aAAa,CAAC;EACZ,UAAU,EAAE,CAAC,CAAC,GAAG,CAAC,IAAI,CAAC,wBAAwB,EAAE,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,wBAAwB;EACnF,MAAM,EAAE,iBAAiB,GAC1B;;AACD,AAAA,aAAa,CAAC;EACZ,MAAM,EAAE,aAAa;EACrB,MAAM,EAAE,KACV,GAAC;;AACD,AAAA,aAAa,AAAA,WAAW,CAAC;EAEvB,MAAM,EAAE,WAAW,GAEpB;;AACD,AAAA,aAAa,AAAA,YAAY,CAAC;EAExB,MAAM,EAAE,YAAY,GAErB;;AACD,AAAA,sBAAsB,CAAC;EACrB,MAAM,EAAE,IAAI,GACb;;ACzBD,gDAAgD;AAGhD,AAAA,KAAK,CAAC;EACJ,UAAU,EAAE,IAAI;EAChB,UAAU,EAAE,wBAAwB;EACpC,eAAe,EAAE,KAAK;EACtB,iBAAiB,EAAE,SAAS;EAC5B,mBAAmB,EAAE,MAAM;EAC3B,QAAQ,EAAE,QAAQ;EAClB,MAAM,EAAE,KAAK;EACb,OAAO,EAAE,IAAI;EACb,WAAW,EAAE,MAAM,GACpB;;ACdD,AAAA,qBAAqB,CAAC;EAElB,MAAM,EAAE,cAAc,GACzB;;AACD,AAAA,2CAA2C,CAAC,aAAa,CAAC;EACtD,SAAS,EAAE,IAAI,GAClB;;AACD,AACI,2BADuB,CACvB,iBAAiB,CAAC,MAAM,CAAC;EACrB,WAAW,EAAE,OAAO;EACpB,YAAY,EAAE,OAAO;EACrB,KAAK,EAAE,IAAI,GASd;EAbL,AAKQ,2BALmB,CACvB,iBAAiB,CAAC,MAAM,CAIpB,GAAG,CAAC;IACA,MAAM,EAAE,cAAc;IACtB,OAAO,EAAE,GAAG;IACZ,KAAK,EAAE,KAAK;IACZ,KAAK,EAAE,IAAI;IACX,YAAY,EAAE,IAAI;IAClB,UAAU,EAAE,IAAI,GACnB;;AAZT,AAeI,2BAfuB,CAevB,CAAC,CAAA,AAAA,EAAC,EAAI,UAAU,AAAd,EAAgB;EACd,MAAM,EAAE,iBAAiB;EACzB,UAAU,EAAE,OAAO;EACnB,KAAK,EAAE,IAAI;EACX,aAAa,EAAE,GAAG;EAClB,eAAe,EAAE,IAAI;EACrB,OAAO,EAAE,OAAO;EAChB,SAAS,EAAC,MAAM;EAChB,cAAc,EAAC,KAAK,GACvB;;AH1BL,mBAAmB;AACnB,AAAA,qBAAqB,AAAA,SAAS,CAAC,iBAAiB,CAAC,EAAE,AAAA,KAAK,CAAC;EACvD,UAAU,EAAE,KAAK,GAClB;;AAKD,oDAAoD;AAEpD,gCAAgC;AAChC,AAAA,UAAU,CAAC,UAAU,CAAC,CAAC,CAAC;EACtB,SAAS,EAAE,IAAI,GAChB;;AAED,AAAA,sBAAsB,CAAC;EACrB,OAAO,EAAE,WAAW,GACrB;;AAED,gCAAgC;AAChC,AAAA,sBAAsB,EAAE,iBAAiB,CAAC;EACxC,OAAO,EAAE,WAAW,GACrB;;AAGD,qCAAqC;AACrC,AAAA,eAAe,CAAC,OAAO,AAAA,sBAAsB,CAAC;EAC5C,OAAO,EAAE,KAAK,GACf;;AACD,AAAA,eAAe,CAAC,0BAA0B,CAAC;EACzC,OAAO,EAAE,IAAI;EACb,eAAe,EAAE,UAAU;EAC3B,SAAS,EAAE,MAAM,GAClB;;AACD,AAAA,eAAe,CAAC,0BAA0B,GAAG,CAAC,CAAC;EAC7C,YAAY,EAAE,IAAI;EAClB,OAAO,EAAC,IAAI,GACb;;AACD,AAAA,eAAe,CAAC,0BAA0B,GAAG,4BAA4B,AAAA,OAAO,CAAA;EAC9E,OAAO,EAAE,GAAG,GACb;;AACD,AAAA,eAAe,CAAC,0BAA0B,GAAG,uCAAuC,AAAA,OAAO,CAAA;EACzF,OAAO,EAAE,GAAG,GACb;;AAGD,AAAA,eAAe,CAAC,0BAA0B,CAAC,+BAA+B,CAAC;EACzE,OAAO,EAAC,IAAI,GACb;;AAED,kCAAkC;AAClC,AAAA,OAAO,AAAA,yBAAyB,CAAC,GAAG;AACpC,eAAe,CAAC,uBAAuB,CAAC,GAAG,CAAC;EAC1C,MAAM,EAAE,cAAc;EACtB,OAAO,EAAE,GAAG;EACZ,KAAK,EAAE,KAAK;EACZ,KAAK,EAAE,IAAI;EACX,YAAY,EAAE,IAAI;EAClB,UAAU,EAAE,IAAI,GACjB;;AACD,AAAA,aAAa,CAAC;EACZ,iEAAiE;EACjE,iEAAiE;EACjE,iEAAiE;EACjE,WAAW,EAAE,0BAA0B,GACxC;;AACD,AAAA,+BAA+B,CAAC,aAAa,CAAC;EAC5C,WAAW,EAAE,OAAO;EACpB,WAAW,EAAE,OAAO,GACrB;;AACD,AAAA,eAAe,CAAC,uBAAuB,CAAC;EACtC,OAAO,EAAE,UAAU;EACnB,aAAa,EAAE,IAAI,GACpB;;AAGD,AAAA,KAAK,CAAC;EACJ,KAAK,EAAC,KAAK,GACZ;;AACD,YAAY;AACZ,AAAA,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,kBAAkB;AAC1B,OAAO,CAAC,qBAAqB;AAC7B,OAAO,CAAC,UAAU;AAClB,QAAQ,CAAC,YAAY;AACrB,OAAO,CAAC,eAAe,CAAC;EACtB,WAAW,EAAE,oDAAoD,GAClE;;AACD,AAAA,UAAU,CAAC;EACT,SAAS,EAAC,KAAK,GAChB"} */
+/*# sourceMappingURL=data:application/json;charset=utf8;base64,{"version":3,"file":"style.css","sources":["style.scss","_lp-preview-grid.scss","_lp-hero.scss","_article-pages.scss","_tooltips.scss"],"sourcesContent":["//imports\n@import 'lp-preview-grid';\n@import 'lp-hero';\n@import 'article-pages';\n@import 'tooltips';\n\n/*on-scroll menu */\n.fixed-header-enabled.onscroll .header-container ul.menu {\n  text-align: right;\n}\n\n\n\n\n/*================================================*/\n\n/*change header title fontsize*/\n.col-md-12 .site-name a {\n  font-size: 40px;\n}\n\n.header-top__container {\n  padding: 60px 0 55px;\n}\n\n/*change padding above content*/\n.main-content__section, .sidebar__section {\n  padding: 60px 0 70px;\n}\n\n\n/*modify issue info on landing page*/\n.path-frontpage .layout.layout--twocol-bricks {\n  display: block;\n}\n.path-frontpage .block-region-second-above {\n  display: flex;\n  justify-content: flex-start;\n  font-size: 1.8rem;\n}\n.path-frontpage .block-region-second-above > * {\n  margin-right: 1rem;\n  display:flex;\n}\n.path-frontpage .block-region-second-above > .block-entity-fieldnodetitle::after{\n  content: \",\";\n}\n.path-frontpage .block-region-second-above > .block-entity-fieldnodefield-issue-year::after{\n  content: \",\";\n}\n\n\n.path-frontpage .block-region-second-above .field--name-field-issue-number {\n  display:flex;\n}\n\n/*tweak images added to articles*/\ndetails#journal-article-text-tab img,\n.path-frontpage .node--view-mode-teaser img {\n  border: 1px solid #ccc;\n  padding: 4px;\n  width: 200px;\n  float: left;\n  margin-right: 1rem;\n  margin-top: 1rem;\n}\n.field__label {\n  /*font-family: 'Merriweather', Georgia, Times New Roman, Serif;*/\n  /*font-family: 'Merriweather', Georgia, Times New Roman, Serif;*/\n  /*font-family: 'Merriweather', Georgia, Times New Roman, Serif;*/\n  font-family: 'Libre Baskerville', serif;\n}\n.field--name-field-issue-number .field__label {\n  font-family: inherit;\n  font-weight: initial;\n}\n.path-frontpage .node--view-mode-teaser {\n  padding: 0 0 30px 0;\n  margin-bottom: 30px;\n}\n\n\n.logo {\n  width:110px;\n}\n/*headings*/\n.hff-01 h1,\n.hff-01 h2,\n.hff-01 h3,\n.hff-01 h4,\n.hff-01 h5,\n.hff-01 h6,\n.hff-01 .tp-caption__title,\n.hff-01 .tp-caption__subtitle,\n.sff-01 .site-name,\n.slff-01 .site-slogan,\n.hff-01 .nav-tab__title {\n  font-family: 'Libre Baskerville', Georgia, Times New Roman, Serif;\n}\n.site-name {\n  font-size:12rem;\n}\n","\n/*====lp article preview cards==================*/\n.preview-card__grid-row {\n  display: flex;\n  justify-content: space-between;\n}\n.preview-card {\n  box-shadow: 0 2px 14px rgba(100, 100, 100, 0.1), 0 2px 2px rgba(100, 100, 100, 0.1);\n  border: 1px solid #e4e4e4;\n}\n.preview-card {\n  margin: 0 1em 2em 1em;\n  height: 250px\n}\n.preview-card:last-child {\n\n  margin: 0 0 2em 1em;\n\n}\n.preview-card:first-child {\n\n  margin: 0 1em 2rem 0;\n\n}\n.preview-card__caption {\n  margin: 10px;\n}\n\n\n","\n/*==========Landing Page Hero Image===========*/\n\n\n.hero {\n  background: blue;\n  background: url(../img/DS2_2648.jpg);\n  background-size: cover;\n  background-repeat: no-repeat;\n  background-position: center;\n  position: relative;\n  height: 250px;\n  display: flex;\n  align-items: center;\n}\n\n\n",".article-title-banner {\n    //display:none;\n    border: 1px solid #ccc;\n}\n.field--name-field-journal-article-abstract .field__label {\n    font-size: 2rem;\n}\n.node--type-journal-article {\n    .field--name-body figure {\n        margin-left: initial;\n        margin-right: initial;\n        float: left;\n        img {\n            border: 1px solid #ccc;\n            padding: 4px;\n            width: 200px;\n            float: left;\n            margin-right: 1rem;\n            margin-top: 1rem;\n        }\n    }\n    //footnotes\n    a[id^=\"footnote\"] {\n        border: 1px solid #5d5d5d;\n        background: #5d5d5d;\n        color: #fff;\n        border-radius: 4px;\n        text-decoration: none;\n        padding: 2px 3px;\n        font-size:1.1rem;\n        vertical-align:super;\n    }\n}\n","/* popup container */\n.popup {\n    position: relative;\n    display: inline-block;\n    border-bottom: 1px dotted black; /* If you want dots under the hoverable text */\n}\n\n/* popup text */\n.popup .popuptext {\n    visibility: hidden;\n    width: 120px;\n    background-color: black;\n    color: #fff;\n    text-align: center;\n    padding: 5px 0;\n    border-radius: 6px;\n \n    /* Position the popup text - see examples below! */\n    position: absolute;\n    z-index: 1;\n}\n\n/* Show the popup text when you mouse over the popup container */\n.popup:hover .popuptext {\n    visibility: visible;\n}\n"],"names":[],"mappings":"ACCA,kDAAkD;AAClD,AAAA,uBAAuB,CAAC;EACtB,OAAO,EAAE,IAAI;EACb,eAAe,EAAE,aAAa,GAC/B;;AACD,AAAA,aAAa,CAAC;EACZ,UAAU,EAAE,CAAC,CAAC,GAAG,CAAC,IAAI,CAAC,wBAAwB,EAAE,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,wBAAwB;EACnF,MAAM,EAAE,iBAAiB,GAC1B;;AACD,AAAA,aAAa,CAAC;EACZ,MAAM,EAAE,aAAa;EACrB,MAAM,EAAE,KACV,GAAC;;AACD,AAAA,aAAa,AAAA,WAAW,CAAC;EAEvB,MAAM,EAAE,WAAW,GAEpB;;AACD,AAAA,aAAa,AAAA,YAAY,CAAC;EAExB,MAAM,EAAE,YAAY,GAErB;;AACD,AAAA,sBAAsB,CAAC;EACrB,MAAM,EAAE,IAAI,GACb;;ACzBD,gDAAgD;AAGhD,AAAA,KAAK,CAAC;EACJ,UAAU,EAAE,IAAI;EAChB,UAAU,EAAE,wBAAwB;EACpC,eAAe,EAAE,KAAK;EACtB,iBAAiB,EAAE,SAAS;EAC5B,mBAAmB,EAAE,MAAM;EAC3B,QAAQ,EAAE,QAAQ;EAClB,MAAM,EAAE,KAAK;EACb,OAAO,EAAE,IAAI;EACb,WAAW,EAAE,MAAM,GACpB;;ACdD,AAAA,qBAAqB,CAAC;EAElB,MAAM,EAAE,cAAc,GACzB;;AACD,AAAA,2CAA2C,CAAC,aAAa,CAAC;EACtD,SAAS,EAAE,IAAI,GAClB;;AACD,AACI,2BADuB,CACvB,iBAAiB,CAAC,MAAM,CAAC;EACrB,WAAW,EAAE,OAAO;EACpB,YAAY,EAAE,OAAO;EACrB,KAAK,EAAE,IAAI,GASd;EAbL,AAKQ,2BALmB,CACvB,iBAAiB,CAAC,MAAM,CAIpB,GAAG,CAAC;IACA,MAAM,EAAE,cAAc;IACtB,OAAO,EAAE,GAAG;IACZ,KAAK,EAAE,KAAK;IACZ,KAAK,EAAE,IAAI;IACX,YAAY,EAAE,IAAI;IAClB,UAAU,EAAE,IAAI,GACnB;;AAZT,AAeI,2BAfuB,CAevB,CAAC,CAAA,AAAA,EAAC,EAAI,UAAU,AAAd,EAAgB;EACd,MAAM,EAAE,iBAAiB;EACzB,UAAU,EAAE,OAAO;EACnB,KAAK,EAAE,IAAI;EACX,aAAa,EAAE,GAAG;EAClB,eAAe,EAAE,IAAI;EACrB,OAAO,EAAE,OAAO;EAChB,SAAS,EAAC,MAAM;EAChB,cAAc,EAAC,KAAK,GACvB;;AC/BL,qBAAqB;AACrB,AAAA,MAAM,CAAC;EACH,QAAQ,EAAE,QAAQ;EAClB,OAAO,EAAE,YAAY;EACrB,aAAa,EAAE,gBAAgB;EAAE,+CAA+C,EACnF;;AAED,gBAAgB;AAChB,AAAA,MAAM,CAAC,UAAU,CAAC;EACd,UAAU,EAAE,MAAM;EAClB,KAAK,EAAE,KAAK;EACZ,gBAAgB,EAAE,KAAK;EACvB,KAAK,EAAE,IAAI;EACX,UAAU,EAAE,MAAM;EAClB,OAAO,EAAE,KAAK;EACd,aAAa,EAAE,GAAG;EAElB,mDAAmD;EACnD,QAAQ,EAAE,QAAQ;EAClB,OAAO,EAAE,CAAC,GACb;;AAED,iEAAiE;AACjE,AAAA,MAAM,AAAA,MAAM,CAAC,UAAU,CAAC;EACpB,UAAU,EAAE,OAAO,GACtB;;AJnBD,mBAAmB;AACnB,AAAA,qBAAqB,AAAA,SAAS,CAAC,iBAAiB,CAAC,EAAE,AAAA,KAAK,CAAC;EACvD,UAAU,EAAE,KAAK,GAClB;;AAKD,oDAAoD;AAEpD,gCAAgC;AAChC,AAAA,UAAU,CAAC,UAAU,CAAC,CAAC,CAAC;EACtB,SAAS,EAAE,IAAI,GAChB;;AAED,AAAA,sBAAsB,CAAC;EACrB,OAAO,EAAE,WAAW,GACrB;;AAED,gCAAgC;AAChC,AAAA,sBAAsB,EAAE,iBAAiB,CAAC;EACxC,OAAO,EAAE,WAAW,GACrB;;AAGD,qCAAqC;AACrC,AAAA,eAAe,CAAC,OAAO,AAAA,sBAAsB,CAAC;EAC5C,OAAO,EAAE,KAAK,GACf;;AACD,AAAA,eAAe,CAAC,0BAA0B,CAAC;EACzC,OAAO,EAAE,IAAI;EACb,eAAe,EAAE,UAAU;EAC3B,SAAS,EAAE,MAAM,GAClB;;AACD,AAAA,eAAe,CAAC,0BAA0B,GAAG,CAAC,CAAC;EAC7C,YAAY,EAAE,IAAI;EAClB,OAAO,EAAC,IAAI,GACb;;AACD,AAAA,eAAe,CAAC,0BAA0B,GAAG,4BAA4B,AAAA,OAAO,CAAA;EAC9E,OAAO,EAAE,GAAG,GACb;;AACD,AAAA,eAAe,CAAC,0BAA0B,GAAG,uCAAuC,AAAA,OAAO,CAAA;EACzF,OAAO,EAAE,GAAG,GACb;;AAGD,AAAA,eAAe,CAAC,0BAA0B,CAAC,+BAA+B,CAAC;EACzE,OAAO,EAAC,IAAI,GACb;;AAED,kCAAkC;AAClC,AAAA,OAAO,AAAA,yBAAyB,CAAC,GAAG;AACpC,eAAe,CAAC,uBAAuB,CAAC,GAAG,CAAC;EAC1C,MAAM,EAAE,cAAc;EACtB,OAAO,EAAE,GAAG;EACZ,KAAK,EAAE,KAAK;EACZ,KAAK,EAAE,IAAI;EACX,YAAY,EAAE,IAAI;EAClB,UAAU,EAAE,IAAI,GACjB;;AACD,AAAA,aAAa,CAAC;EACZ,iEAAiE;EACjE,iEAAiE;EACjE,iEAAiE;EACjE,WAAW,EAAE,0BAA0B,GACxC;;AACD,AAAA,+BAA+B,CAAC,aAAa,CAAC;EAC5C,WAAW,EAAE,OAAO;EACpB,WAAW,EAAE,OAAO,GACrB;;AACD,AAAA,eAAe,CAAC,uBAAuB,CAAC;EACtC,OAAO,EAAE,UAAU;EACnB,aAAa,EAAE,IAAI,GACpB;;AAGD,AAAA,KAAK,CAAC;EACJ,KAAK,EAAC,KAAK,GACZ;;AACD,YAAY;AACZ,AAAA,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,EAAE;AACV,OAAO,CAAC,kBAAkB;AAC1B,OAAO,CAAC,qBAAqB;AAC7B,OAAO,CAAC,UAAU;AAClB,QAAQ,CAAC,YAAY;AACrB,OAAO,CAAC,eAAe,CAAC;EACtB,WAAW,EAAE,oDAAoD,GAClE;;AACD,AAAA,UAAU,CAAC;EACT,SAAS,EAAC,KAAK,GAChB"} */
diff --git a/js/js.js b/js/js.js
index a36b634..d4276fb 100644
--- a/js/js.js
+++ b/js/js.js
@@ -1,14 +1,14 @@
 (function ($, Drupal) {
 
-  Drupal.behaviors.footnote_tooltips = {
-    attach: function attach(context, settings) {
-        //js goes here
-        //$('.menu').remove();
-        var footnote_link = $("a[id^='footnote']");
-         var footnote_link = $("li[id^='footnote']");
-
-    }
-  };
+    Drupal.behaviors.footnote_popups = {
+        attach: function attach(context, settings) {
+            $.each($("li[id^='footnote']"), function(index, value) {
+                var _footnoteText_ = $(value).text();
+                var _id_ = $(this).attr("id");
+                $('a[href$="' + _id_ + '"]').attr('data-toggle', 'tooltip').attr('data-original-title', _footnoteText_).attr('title', '');
+            });
+        }
+    };
 
 
 
diff --git a/src/js/js.js b/src/js/js.js
index a36b634..d4276fb 100644
--- a/src/js/js.js
+++ b/src/js/js.js
@@ -1,14 +1,14 @@
 (function ($, Drupal) {
 
-  Drupal.behaviors.footnote_tooltips = {
-    attach: function attach(context, settings) {
-        //js goes here
-        //$('.menu').remove();
-        var footnote_link = $("a[id^='footnote']");
-         var footnote_link = $("li[id^='footnote']");
-
-    }
-  };
+    Drupal.behaviors.footnote_popups = {
+        attach: function attach(context, settings) {
+            $.each($("li[id^='footnote']"), function(index, value) {
+                var _footnoteText_ = $(value).text();
+                var _id_ = $(this).attr("id");
+                $('a[href$="' + _id_ + '"]').attr('data-toggle', 'tooltip').attr('data-original-title', _footnoteText_).attr('title', '');
+            });
+        }
+    };
 
 
 
diff --git a/src/scss/_tooltips.scss b/src/scss/_tooltips.scss
new file mode 100644
index 0000000..b93c99b
--- /dev/null
+++ b/src/scss/_tooltips.scss
@@ -0,0 +1,26 @@
+/* popup container */
+.popup {
+    position: relative;
+    display: inline-block;
+    border-bottom: 1px dotted black; /* If you want dots under the hoverable text */
+}
+
+/* popup text */
+.popup .popuptext {
+    visibility: hidden;
+    width: 120px;
+    background-color: black;
+    color: #fff;
+    text-align: center;
+    padding: 5px 0;
+    border-radius: 6px;
+ 
+    /* Position the popup text - see examples below! */
+    position: absolute;
+    z-index: 1;
+}
+
+/* Show the popup text when you mouse over the popup container */
+.popup:hover .popuptext {
+    visibility: visible;
+}
diff --git a/src/scss/style.scss b/src/scss/style.scss
index 21a4858..e3014f6 100644
--- a/src/scss/style.scss
+++ b/src/scss/style.scss
@@ -2,6 +2,7 @@
 @import 'lp-preview-grid';
 @import 'lp-hero';
 @import 'article-pages';
+@import 'tooltips';
 
 /*on-scroll menu */
 .fixed-header-enabled.onscroll .header-container ul.menu {