improve: set padding in em so inputs resize with font-size

Author: Thimy Kieu

CHANGELOG.md

@@ -5,9 +5,12 @@
 #### Enhancements
 
 - Added a `required` class to `labels` to inform about _required_ fields
+- Change padding unit on inputs
 
 #### Bug fixes
+
 - Added a polyfill for Internet Explorer support
+- Fixed visual glitch on select arrow
 
 ## v1.2.0 (23/01/2019)
 

src/css/elements/input.css

@@ -3,7 +3,7 @@ textarea,
 select {
   width: 100%;
   outline: none;
-  padding: 8px 14px;
+  padding: 0.5em 0.875em;
   font: inherit;
   line-height: 1.6;
   color: var(--black);
@@ -28,13 +28,13 @@ select:disabled {
 
 input[type=radio],
 input[type=checkbox] {
-  margin-right: 6px;
-  margin-top: 0;
+  margin: 0;
+  margin-right: var(--space-xs);
 }
 
 input[type=radio] {
-  height: 20px;
-  width: 20px;
+  height: 1.25em;
+  width: 1.25em;
   border-radius: 50%;
   display: inline-block;
   appearance: none;
@@ -46,10 +46,10 @@ input[type=radio]::before {
   border-color: var(--theme-primary);
   border-radius: 50%;
   position: absolute;
-  top: 5px;
-  left: 5px;
-  width: 8px;
-  height: 8px;
+  top: 0.35em;
+  left: 0.3em;
+  width: 0.5em;
+  height: 0.5em;
   transform: scale(0);
 }
 
@@ -67,8 +67,8 @@ input[type=radio]:checked::before {
 
 input[type="checkbox"] {
   appearance: none;
-  height: 22px;
-  width: 22px;
+  height: 1.4em;
+  width: 1.5em;
   padding: 0;
 }
 
@@ -83,10 +83,10 @@ input[type="checkbox"]::before {
   transform: scale(0);
   content: '';
   position: absolute;
-  top: 3px;
-  left: 3px;
-  height: 14px;
-  width: 14px;
+  top: 0.2em;
+  left: 0.15em;
+  height: 1em;
+  width: 1em;
   background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"><path d="M14.23 1.304L6.112 9.501 2.767 6.117a1.029 1.029 0 0 0-1.464 0 1.054 1.054 0 0 0 0 1.479l4.055 4.101c.208.21.481.31.754.305.272.005.545-.095.753-.305l8.829-8.915a1.053 1.053 0 0 0 0-1.478 1.027 1.027 0 0 0-1.464 0z" fill="white" /></svg>') center center no-repeat;
 }