diff --git a/dist/stylelite.map b/dist/stylelite.map
index 6cb9c65..45fac61 100644
--- a/dist/stylelite.map
+++ b/dist/stylelite.map
@@ -1 +1 @@
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pointer;\r\n}\r\n\r\ninput:disabled {\r\n    background: var(--mg);\r\n    color: var(--bg);\r\n    cursor: not-allowed;\r\n}\r\n\r\nselect:focus,textarea:focus,input:focus {\r\n    border: 2px solid var(--mg);\r\n}\r\n\r\ninput[type=\"checkbox\"],input[type=\"radio\"] {\r\n    display: inline-block;\r\n    padding: 0;\r\n    margin: 0 .5rem;\r\n    width: calc(var(--size) * .8);\r\n    height: calc(var(--size) * .8);\r\n}\r\n\r\nselect,textarea {\r\n    display: inline-block;\r\n    outline: none;\r\n    font-size: var(--size);\r\n    height: calc(var(--size) * 3);\r\n    width: 100%;\r\n    border: 1px solid var(--mg);\r\n    color: var(--fg);\r\n    background: var(--bg);\r\n    border-radius: var(--radius);\r\n    padding: 0 var(--space);\r\n    margin-bottom: var(--space);\r\n    cursor: pointer;\r\n}\r\n\r\nselect {\r\n    background: var(--bg) no-repeat 100%;\r\n    color: var(--fg);\r\n    padding: 0 clamp(.5rem, var(--space), 2rem);\r\n    appearance: none;\r\n    background-size: 1ex;\r\n    background-origin: content-box;\r\n    background-image: url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='40' fill='%23555'><polygon points='0,0 60,0 30,40'/></svg>\");\r\n}\r\n\r\ntextarea {\r\n    overflow: auto;\r\n    resize: vertical;\r\n    border: 1px solid var(--mg);\r\n    height: calc(var(--size) * 6rem);;\r\n    padding: clamp(.5rem, var(--space), 2rem);\r\n    cursor: text;\r\n    color: var(--fg);\r\n}\r\n\r\n/* Grid System */\r\n\r\n.grid {\r\n    display: grid;\r\n    gap: var(--space);\r\n    grid-template-columns: repeat(auto-fit, minmax(0%, 1fr));\r\n}\r\n\r\n.row {\r\n    display: flex;\r\n    flex: 0 1 auto;\r\n    flex-direction: row;\r\n    flex-wrap: wrap;\r\n    margin:0;\r\n}\r\n.row>div, .col, .col-1, .col-2, .col-3, .col-4,.col-5 {\r\n    display: flex;\r\n    flex-direction: column;\r\n    justify-content: space-between;\r\n    align-items: stretch;\r\n    box-sizing: border-box;\r\n    flex: 1;\r\n    max-width: 100%;\r\n}\r\n\r\n.col-1 {flex: 1 !important;}\r\n.col-2 {flex: 2 !important;}\r\n.col-3 {flex: 3 !important;}\r\n.col-4 {flex: 4 !important;}\r\n.col-5 {flex: 5 !important;}\r\n\r\n/* Utilities */\r\n\r\n.right {float:right}\r\n.left {float:left}\r\n.clear {content:'';display: table;clear:both}\r\n.full {width: 100%; height: 100%}\r\n.outline {background-color: transparent; color: var(--fg); border: 1px solid var(--fg)}\r\n.border {border: 1px solid var(--mg)}\r\n.underline {border-bottom: 1px solid var(--mg)}\r\n.center {text-align: center;}\r\n.content {margin: var(--space) 0}\r\n.subtitle {margin-top: calc(var(--size) * -1)};\r\n.spaceless {margin: 0; padding:0}\r\n\r\n/* experiment */\r\n.sm {\r\n    font-size: small;\r\n    height: calc(var(--size) * 1.5);\r\n    padding: 0 calc(var(--size) / .75);\r\n}\r\n.lg {\r\n    font-size: x-large;\r\n    height: calc(var(--size) * 4.5);\r\n    padding: 0 calc(var(--size) / 1.25);\r\n}"]}
\ No newline at end of file
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Stylelite v:0.5.0 | MIT LICENSE | https://github.com/n2geoff/stylelite */\r\n:root {\r\n    --space: 1rem;\r\n    --size: 1.1rem;\r\n    --radius: 0rem;\r\n    --fg: #17202A;\r\n    --bg: #FDFEFE;\r\n    --mg: #ABB2B9;\r\n}\r\n\r\n[data-theme=dark] {\r\n    --mg: #ABB2B9;\r\n    --bg: #17202A;\r\n    --fg: #FDFEFE;\r\n}\r\n\r\n*,*:before,*:after {\r\n    box-sizing: border-box;\r\n}\r\n\r\nhtml,body {\r\n    background: var(--bg);\r\n    color: var(--fg);\r\n    margin: 0;\r\n    padding: 0;\r\n    font-family: Verdana, Arial, Helvetica, sans-serif;\r\n    font-size: var(--size);\r\n    letter-spacing: 0.0625em;\r\n    line-height: calc(var(--size) * 1.5);\r\n    box-sizing: border-box;\r\n    padding: 0;\r\n}\r\n\r\nimg,embed,iframe,object,audio,video {\r\n    height: auto;\r\n    max-width: 100%;\r\n    border: none;\r\n}\r\n\r\nmain {\r\n    margin: 0 auto;\r\n    padding: var(--space);\r\n    height: 100vh;\r\n    max-width: 1140px;\r\n}\r\n\r\nul,ol,li {\r\n    margin: 0 calc(var(--space) *.72);\r\n    padding: 0\r\n}\r\n\r\ntable {\r\n    background: var(--bg);\r\n    border-collapse: collapse;\r\n    border-spacing: 0;\r\n    width: 100%;\r\n}\r\n\r\nth {\r\n    text-align: left;\r\n}\r\n\r\nth,td {\r\n    padding: calc(var(--space) / 2.4);\r\n    border-bottom: 1px solid var(--mg);\r\n}\r\n\r\nblockquote {\r\n    margin: var(--space) 0;\r\n    border-left: calc(var(--space) / 2) solid var(--fg);\r\n    color: var(--fg);\r\n    background: var(--mg);\r\n    padding: var(--space);\r\n}\r\n\r\ncode {\r\n    color: var(--mg);\r\n    font-family: monospace;\r\n}\r\n\r\nblockquote code, details code {\r\n    color: var(--bg);\r\n}\r\n\r\nhr {\r\n    color: var(--mg);\r\n    border: 1px solid;\r\n}\r\n\r\nh1,h2,h3,h4,h5,h6 {\r\n    margin: var(--space) 0;\r\n    padding-bottom: calc(var(--space) / 2);\r\n    text-transform: capitalize;\r\n}\r\n\r\nh1 {\r\n    font-size: calc(var(--size) * 2);\r\n    color: var(--fg);\r\n}\r\n\r\na {color: var(--mg)}\r\na:hover {color: var(--fg)}\r\n\r\nsection, article {\r\n    margin-top: calc(var(--space) * 1.2);\r\n    padding-bottom: var(--space);\r\n}\r\n\r\n/* Forms */\r\n\r\ndetails {\r\n    margin: var(--space) 0;\r\n    color: var(--bg);\r\n    cursor: pointer;\r\n}\r\n\r\ndetails[open] {\r\n    background-color: var(--mg);\r\n    margin-bottom: var(--space);\r\n}\r\n\r\ndetails>* {padding: calc(var(--space)/2); border-top: 1px solid var(--bg)}\r\n\r\nsummary {\r\n    background-color: var(--mg);\r\n}\r\n\r\nbutton, input {\r\n    display: inline-block;\r\n    outline: none;\r\n    box-sizing: border-box;\r\n    font-size: var(--size);\r\n    background: var(--bg);\r\n    color: var(--fg);\r\n    width: 100%;\r\n    height: calc(var(--size) * 3);\r\n    border: 1px solid var(--mg);\r\n    border-radius: var(--radius);\r\n    padding: clamp(.5rem, var(--space), 2rem);\r\n    margin-bottom: var(--space);\r\n    margin-right: var(--space);\r\n}\r\n\r\nbutton, input[type=\"reset\"],input[type=\"submit\"] {\r\n    display: inline-block;\r\n    text-transform: uppercase;\r\n    border-radius: var(--radius);\r\n    width: initial;\r\n    background: var(--fg);\r\n    color: var(--bg);\r\n}\r\n\r\nbutton {\r\n    background: var(--fg);\r\n    color: var(--bg);\r\n}\r\n\r\nbutton:hover, input[type=\"reset\"]:hover,input[type=\"submit\"]:hover {\r\n    background: var(--mg);\r\n    color: var(--fg);\r\n    cursor: pointer;\r\n}\r\n\r\ninput:disabled {\r\n    background: var(--mg);\r\n    color: var(--bg);\r\n    cursor: not-allowed;\r\n}\r\n\r\nselect:focus,textarea:focus,input:focus {\r\n    border: 2px solid var(--mg);\r\n}\r\n\r\ninput[type=\"checkbox\"],input[type=\"radio\"] {\r\n    display: inline-block;\r\n    padding: 0;\r\n    margin: 0 .5rem;\r\n    width: calc(var(--size) * .8);\r\n    height: calc(var(--size) * .8);\r\n}\r\n\r\nselect,textarea {\r\n    display: inline-block;\r\n    outline: none;\r\n    font-size: var(--size);\r\n    height: calc(var(--size) * 3);\r\n    width: 100%;\r\n    border: 1px solid var(--mg);\r\n    color: var(--fg);\r\n    background: var(--bg);\r\n    border-radius: var(--radius);\r\n    padding: 0 var(--space);\r\n    margin-bottom: var(--space);\r\n    cursor: pointer;\r\n}\r\n\r\nselect {\r\n    background: var(--bg) no-repeat 100%;\r\n    color: var(--fg);\r\n    padding: 0 clamp(.5rem, var(--space), 2rem);\r\n    appearance: none;\r\n    background-size: 1ex;\r\n    background-origin: content-box;\r\n    background-image: url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='40' fill='%23555'><polygon points='0,0 60,0 30,40'/></svg>\");\r\n}\r\n\r\ntextarea {\r\n    overflow: auto;\r\n    resize: vertical;\r\n    border: 1px solid var(--mg);\r\n    height: calc(var(--size) * 6rem);;\r\n    padding: clamp(.5rem, var(--space), 2rem);\r\n    cursor: text;\r\n    color: var(--fg);\r\n}\r\n\r\n/* Navigation */\r\n\r\nnav {\r\n    display: flex;\r\n    justify-content: space-between;\r\n    padding: .5rem 1rem;\r\n    background-color: var(--fg);\r\n    color: var(--bg);\r\n}\r\n\r\nnav ul {\r\n    display: flex;\r\n    list-style-type: none;\r\n}\r\n\r\nnav ul li a {\r\n    color: var(--bg);\r\n    text-decoration: none;\r\n}\r\nnav ul li a:hover {color: var(--mg)}\r\n\r\n\r\n/* Grid System */\r\n\r\n.grid {\r\n    display: grid;\r\n    gap: var(--space);\r\n    grid-template-columns: repeat(auto-fit, minmax(0%, 1fr));\r\n}\r\n\r\n.row {\r\n    display: flex;\r\n    flex: 0 1 auto;\r\n    flex-direction: row;\r\n    flex-wrap: wrap;\r\n    margin:0;\r\n}\r\n.row>*, .col, .col-1, .col-2, .col-3, .col-4,.col-5 {\r\n    display: flex;\r\n    flex-direction: column;\r\n    justify-content: space-between;\r\n    align-items: stretch;\r\n    box-sizing: border-box;\r\n    flex: 1;\r\n    max-width: 100%;\r\n}\r\n\r\n.col-1 {flex: 1 !important;}\r\n.col-2 {flex: 2 !important;}\r\n.col-3 {flex: 3 !important;}\r\n.col-4 {flex: 4 !important;}\r\n.col-5 {flex: 5 !important;}\r\n\r\n/* Utilities */\r\n\r\n.right {float:right}\r\n.left {float:left}\r\n.center {text-align: center;}\r\n.clear {content:'';display: table;clear:both}\r\n.fill {width: 100%; height: 100%}\r\n.outline {background-color: transparent; color: var(--fg); border: 1px solid var(--fg)}\r\n.underline {border-bottom: 1px solid var(--mg)}\r\n.border {border: 1px solid var(--mg)}\r\n.content {padding: var(--space)}\r\n.subtitle {margin-top: calc(var(--size) * -1); margin-bottom: var(--space); font-size: smaller};\r\n.spaceless {margin: 0; padding:0}\r\n.sm {font-size: small;height: calc(var(--size) * 1.5);padding: 0 calc(var(--size)/ .75);}\r\n.lg {font-size: x-large;height: calc(var(--size) * 4.5);padding: 0 calc(var(--size) / 1.25);}"]}
\ No newline at end of file
diff --git a/dist/stylelite.min.css b/dist/stylelite.min.css
index 8831b89..92f4c7b 100644
--- a/dist/stylelite.min.css
+++ b/dist/stylelite.min.css
@@ -1,3 +1,3 @@
-/*! Stylelite v:0.1.0 | MIT LICENSE | https://github.com/n2geoff/stylelite */
-:root{--space:1rem;--size:1.1rem;--radius:0rem;--fg:#17202A;--bg:#FDFEFE;--mg:#ABB2B9}[data-theme=dark]{--mg:#ABB2B9;--bg:#17202A;--fg:#FDFEFE}*,:after,:before,body,html{box-sizing:border-box}body,html{color:var(--fg);margin:0;font-family:Verdana,Arial,Helvetica,sans-serif;font-size:var(--size);letter-spacing:.0625em;line-height:calc(var(--size)*1.5);padding:0}audio,embed,iframe,img,object,video{height:auto;max-width:100%;border:0}blockquote,main{padding:var(--space)}main{margin:0 auto;height:100vh;max-width:1140px}li,ol,ul{margin:0 calc(var(--space)*.72);padding:0}body,button,html,input,table{background:var(--bg)}table{border-collapse:collapse;border-spacing:0;width:100%}th{text-align:left}td,th{padding:calc(var(--space)/2.4);border-bottom:1px solid var(--mg)}blockquote{margin:var(--space) 0;border-left:calc(var(--space)/2) solid var(--fg);color:var(--fg);background:var(--mg)}code,hr{color:var(--mg)}code{font-family:monospace}blockquote code{color:var(--bg)}hr{border:1px solid}h1,h2,h3,h4,h5,h6{margin:var(--space) 0;padding-bottom:calc(var(--space)/2);text-transform:capitalize}h1{font-size:calc(var(--size)*2)}article,section{margin-top:calc(var(--space)*1.2);padding-bottom:var(--space)}button,input{outline:0;box-sizing:border-box;font-size:var(--size);height:calc(var(--size)*3);border:1px solid var(--mg);padding:clamp(.5rem,var(--space),2rem);margin-bottom:var(--space);margin-right:var(--space)}h1,input{color:var(--fg)}input{display:block;width:100%;border-radius:var(--radius)}button,input[type=reset],input[type=submit]{display:inline-block;text-transform:uppercase;border-radius:var(--radius);width:initial;background:var(--fg);color:var(--bg)}button:hover,input[type=reset]:hover,input[type=submit]:hover{background:var(--mg);color:var(--fg);cursor:pointer}input:disabled{background:var(--mg);color:var(--bg);cursor:not-allowed}input:focus,select:focus,textarea:focus{border:2px solid var(--mg)}input[type=checkbox],input[type=radio]{display:inline-block;padding:0;margin:0 .5rem;width:calc(var(--size)*.8);height:calc(var(--size)*.8)}select,textarea{display:inline-block;outline:0;font-size:var(--size);height:calc(var(--size)*3);width:100%;background:var(--bg);border-radius:var(--radius);padding:0 var(--space);margin-bottom:var(--space);border:1px solid var(--mg);color:var(--fg)}select{cursor:pointer;background:var(--bg) no-repeat 100%;padding:0 clamp(.5rem,var(--space),2rem);appearance:none;background-size:1ex;background-origin:content-box;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='40' fill='%23555'><polygon points='0,0 60,0 30,40'/></svg>")}textarea{overflow:auto;resize:vertical;height:calc(var(--size)*6rem);padding:clamp(.5rem,var(--space),2rem);cursor:text}.grid{display:grid;gap:var(--space);grid-template-columns:repeat(auto-fit,minmax(0,1fr))}.row{display:flex;flex:0 1 auto;flex-direction:row;flex-wrap:wrap;margin:0}.col,.row>div{flex:1}.col,.col-1,.col-2,.col-3,.col-4,.col-5,.row>div{display:flex;flex-direction:column;justify-content:space-between;align-items:stretch;box-sizing:border-box;max-width:100%}.col-1{flex:1!important}.col-2{flex:2!important}.col-3{flex:3!important}.col-4{flex:4!important}.col-5{flex:5!important}.right{float:right}.left{float:left}.clear{content:'';display:table;clear:both}.full{width:100%;height:100%}.outline{background-color:transparent;color:var(--fg);border:1px solid var(--fg)}.border{border:1px solid var(--mg)}.underline{border-bottom:1px solid var(--mg)}.center{text-align:center}.content{margin:var(--space) 0}.subtitle{margin-top:calc(var(--size)*-1)}.sm{font-size:small;height:calc(var(--size)*1.5);padding:0 calc(var(--size)/.75)}.lg{font-size:x-large;height:calc(var(--size)*4.5);padding:0 calc(var(--size)/1.25)}
+/*! Stylelite v:0.5.0 | MIT LICENSE | https://github.com/n2geoff/stylelite */
+:root{--space:1rem;--size:1.1rem;--radius:0rem;--fg:#17202A;--bg:#FDFEFE;--mg:#ABB2B9}[data-theme=dark]{--mg:#ABB2B9;--bg:#17202A;--fg:#FDFEFE}*,:after,:before{box-sizing:border-box}body,html,table{background:var(--bg)}body,html{color:var(--fg);margin:0;font-family:Verdana,Arial,Helvetica,sans-serif;font-size:var(--size);letter-spacing:.0625em;line-height:calc(var(--size)*1.5);box-sizing:border-box;padding:0}audio,embed,iframe,img,object,video{height:auto;max-width:100%;border:0}blockquote,main{padding:var(--space)}main{margin:0 auto;height:100vh;max-width:1140px}li,ol,ul{margin:0 calc(var(--space)*.72);padding:0}table{border-collapse:collapse;border-spacing:0;width:100%}th{text-align:left}td,th{padding:calc(var(--space)/2.4);border-bottom:1px solid var(--mg)}blockquote{border-left:calc(var(--space)/2) solid var(--fg);color:var(--fg);background:var(--mg)}code{font-family:monospace}blockquote code,button,details,details code{color:var(--bg)}hr{border:1px solid}h1,h2,h3,h4,h5,h6{margin:var(--space) 0;padding-bottom:calc(var(--space)/2);text-transform:capitalize}h1{font-size:calc(var(--size)*2)}a,code,hr,nav ul li a:hover{color:var(--mg)}a:hover,h1{color:var(--fg)}article,section{margin-top:calc(var(--space)*1.2);padding-bottom:var(--space)}blockquote,details{margin:var(--space) 0}details{cursor:pointer}details[open]{margin-bottom:var(--space)}details>*{padding:calc(var(--space)/2);border-top:1px solid var(--bg)}details[open],summary{background-color:var(--mg)}button{text-transform:uppercase;width:initial;background:var(--fg)}button,input,input[type=reset],input[type=submit]{display:inline-block;border-radius:var(--radius)}button,input{outline:0;box-sizing:border-box;font-size:var(--size);background:var(--bg);height:calc(var(--size)*3);border:1px solid var(--mg);padding:clamp(.5rem,var(--space),2rem);margin-bottom:var(--space);margin-right:var(--space)}input{color:var(--fg);width:100%}input[type=reset],input[type=submit]{text-transform:uppercase;width:initial;background:var(--fg);color:var(--bg)}button:hover,input[type=reset]:hover,input[type=submit]:hover{background:var(--mg);color:var(--fg);cursor:pointer}input:disabled{background:var(--mg);color:var(--bg);cursor:not-allowed}input:focus,select:focus,textarea:focus{border:2px solid var(--mg)}input[type=checkbox],input[type=radio]{display:inline-block;padding:0;margin:0 .5rem;width:calc(var(--size)*.8);height:calc(var(--size)*.8)}select,textarea{display:inline-block;outline:0;font-size:var(--size);height:calc(var(--size)*3);width:100%;background:var(--bg);border-radius:var(--radius);padding:0 var(--space);margin-bottom:var(--space);border:1px solid var(--mg);color:var(--fg)}select{cursor:pointer;background:var(--bg) no-repeat 100%;padding:0 clamp(.5rem,var(--space),2rem);appearance:none;background-size:1ex;background-origin:content-box;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='40' fill='%23555'><polygon points='0,0 60,0 30,40'/></svg>")}textarea{overflow:auto;resize:vertical;height:calc(var(--size)*6rem);padding:clamp(.5rem,var(--space),2rem);cursor:text}nav{justify-content:space-between;padding:.5rem 1rem;background-color:var(--fg);color:var(--bg)}nav ul{list-style-type:none}nav ul li a{color:var(--bg);text-decoration:none}.grid{display:grid;gap:var(--space);grid-template-columns:repeat(auto-fit,minmax(0,1fr))}.row,nav,nav ul{display:flex}.row{flex:0 1 auto;flex-direction:row;flex-wrap:wrap;margin:0}.col,.row>*{flex:1}.col,.col-1,.col-2,.col-3,.col-4,.col-5,.row>*{display:flex;flex-direction:column;justify-content:space-between;align-items:stretch;box-sizing:border-box;max-width:100%}.col-1{flex:1!important}.col-2{flex:2!important}.col-3{flex:3!important}.col-4{flex:4!important}.col-5{flex:5!important}.right{float:right}.left{float:left}.center{text-align:center}.clear{content:'';display:table;clear:both}.fill{width:100%;height:100%}.outline{background-color:transparent;color:var(--fg);border:1px solid var(--fg)}.underline{border-bottom:1px solid var(--mg)}.border{border:1px solid var(--mg)}.content{padding:var(--space)}.subtitle{margin-top:calc(var(--size)*-1);margin-bottom:var(--space);font-size:smaller}.sm{font-size:small;height:calc(var(--size)*1.5);padding:0 calc(var(--size)/.75)}.lg{font-size:x-large;height:calc(var(--size)*4.5);padding:0 calc(var(--size)/1.25)}
 /*# sourceMappingURL=stylelite.map */
\ No newline at end of file
diff --git a/package.json b/package.json
index c85f110..0d1fd2a 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,9 @@
 {
   "name": "stylelite",
-  "version": "0.1.0",
+  "version": "0.5.0",
   "description": "css for minimalists",
   "scripts": {
-    "build": "npx csso .\\src\\stylelite.css --comments first-exclamation --output .\\dist\\stylelite.min.css -s .\\dist\\stylelite.map "
+    "build": "npx csso .\\src\\stylelite.css --comments first-exclamation --output .\\dist\\stylelite.min.css -s .\\dist\\stylelite.map"
   },
   "repository": {
     "type": "git",
@@ -11,6 +11,7 @@
   },
   "keywords": [
     "css",
+    "css3",
     "stylesheet",
     "classless",
     "classlite"
diff --git a/src/stylelite.css b/src/stylelite.css
index 4df7338..e1e0ed6 100644
--- a/src/stylelite.css
+++ b/src/stylelite.css
@@ -1,4 +1,4 @@
-/*! Stylelite v:0.1.0 | MIT LICENSE | https://github.com/n2geoff/stylelite */
+/*! Stylelite v:0.5.0 | MIT LICENSE | https://github.com/n2geoff/stylelite */
 :root {
     --space: 1rem;
     --size: 1.1rem;
@@ -78,7 +78,7 @@ code {
     font-family: monospace;
 }
 
-blockquote code {
+blockquote code, details code {
     color: var(--bg);
 }
 
@@ -98,6 +98,9 @@ h1 {
     color: var(--fg);
 }
 
+a {color: var(--mg)}
+a:hover {color: var(--fg)}
+
 section, article {
     margin-top: calc(var(--space) * 1.2);
     padding-bottom: var(--space);
@@ -105,8 +108,25 @@ section, article {
 
 /* Forms */
 
+details {
+    margin: var(--space) 0;
+    color: var(--bg);
+    cursor: pointer;
+}
+
+details[open] {
+    background-color: var(--mg);
+    margin-bottom: var(--space);
+}
+
+details>* {padding: calc(var(--space)/2); border-top: 1px solid var(--bg)}
+
+summary {
+    background-color: var(--mg);
+}
+
 button, input {
-    display: block;
+    display: inline-block;
     outline: none;
     box-sizing: border-box;
     font-size: var(--size);
@@ -194,6 +214,28 @@ textarea {
     color: var(--fg);
 }
 
+/* Navigation */
+
+nav {
+    display: flex;
+    justify-content: space-between;
+    padding: .5rem 1rem;
+    background-color: var(--fg);
+    color: var(--bg);
+}
+
+nav ul {
+    display: flex;
+    list-style-type: none;
+}
+
+nav ul li a {
+    color: var(--bg);
+    text-decoration: none;
+}
+nav ul li a:hover {color: var(--mg)}
+
+
 /* Grid System */
 
 .grid {
@@ -209,7 +251,7 @@ textarea {
     flex-wrap: wrap;
     margin:0;
 }
-.row>div, .col, .col-1, .col-2, .col-3, .col-4,.col-5 {
+.row>*, .col, .col-1, .col-2, .col-3, .col-4,.col-5 {
     display: flex;
     flex-direction: column;
     justify-content: space-between;
@@ -229,24 +271,14 @@ textarea {
 
 .right {float:right}
 .left {float:left}
-.clear {content:'';display: table;clear:both}
-.full {width: 100%; height: 100%}
-.outline {background-color: transparent; color: var(--fg); border: 1px solid var(--fg)}
-.border {border: 1px solid var(--mg)}
-.underline {border-bottom: 1px solid var(--mg)}
 .center {text-align: center;}
-.content {margin: var(--space) 0}
-.subtitle {margin-top: calc(var(--size) * -1)};
+.clear {content:'';display: table;clear:both}
+.fill {width: 100%; height: 100%}
+.outline {background-color: transparent; color: var(--fg); border: 1px solid var(--fg)}
+.underline {border-bottom: 1px solid var(--mg)}
+.border {border: 1px solid var(--mg)}
+.content {padding: var(--space)}
+.subtitle {margin-top: calc(var(--size) * -1); margin-bottom: var(--space); font-size: smaller};
 .spaceless {margin: 0; padding:0}
-
-/* experiment */
-.sm {
-    font-size: small;
-    height: calc(var(--size) * 1.5);
-    padding: 0 calc(var(--size) / .75);
-}
-.lg {
-    font-size: x-large;
-    height: calc(var(--size) * 4.5);
-    padding: 0 calc(var(--size) / 1.25);
-}
\ No newline at end of file
+.sm {font-size: small;height: calc(var(--size) * 1.5);padding: 0 calc(var(--size)/ .75);}
+.lg {font-size: x-large;height: calc(var(--size) * 4.5);padding: 0 calc(var(--size) / 1.25);}
\ No newline at end of file