Add minireset, Fix color luminance

sass/base/base.sass

@@ -1,4 +1,5 @@
 @charset "utf-8"
 
+@import "minireset"
 @import "generic"
 @import "helpers"

sass/base/generic.sass

@@ -58,7 +58,10 @@ code
   padding: 1px 2px 2px
 
 hr
-  border-top-color: $border
+  background-color: $border
+  border: none
+  display: block
+  height: 1px
   margin: 40px 0
 
 img

sass/base/helpers.sass

@@ -1,4 +1,3 @@
-@import "./placeholders.sass"
 @import "../utilities/mixins.sass"
 
 // Display
@@ -107,4 +106,4 @@ $displays: 'block' 'flex' 'inline' 'inline-block' 'inline-flex'
   padding: 0 !important
 
 .is-unselectable
-  @extend %unselectable
+  +unselectable

sass/base/minireset.sass

@@ -0,0 +1,81 @@
+/*! minireset.css v0.0.2 | MIT License | github.com/jgthms/minireset.css */
+// Blocks
+html,
+body,
+p,
+ol,
+ul,
+li,
+dl,
+dt,
+dd,
+blockquote,
+figure,
+fieldset,
+legend,
+textarea,
+pre,
+iframe,
+hr,
+h1,
+h2,
+h3,
+h4,
+h5,
+h6
+  margin: 0
+  padding: 0
+
+// Headings
+h1,
+h2,
+h3,
+h4,
+h5,
+h6
+  font-size: 100%
+  font-weight: normal
+
+// List
+ul
+  list-style: none
+
+// Form
+button,
+input,
+select,
+textarea
+  margin: 0
+
+// Box sizing
+html
+  box-sizing: border-box
+
+*
+  box-sizing: inherit
+  &:before,
+  &:after
+    box-sizing: inherit
+
+// Media
+img,
+embed,
+object,
+audio,
+video
+  height: auto
+  max-width: 100%
+
+// Iframe
+iframe
+  border: 0
+
+// Table
+table
+  border-collapse: collapse
+  border-spacing: 0
+
+td,
+th
+  padding: 0
+  text-align: left

sass/base/placeholders.sass

@@ -1,107 +0,0 @@
-@import "../utilities/animations.sass"
-@import "../utilities/variables.sass"
-
-%block
-  &:not(:last-child)
-    margin-bottom: 20px
-
-%delete
-  @extend %unselectable
-  -moz-appearance: none
-  -webkit-appearance: none
-  background-color: rgba($black, 0.2)
-  border: none
-  border-radius: 290486px
-  cursor: pointer
-  display: inline-block
-  height: 24px
-  position: relative
-  vertical-align: top
-  width: 24px
-  &:before,
-  &:after
-    background-color: $white
-    content: ""
-    display: block
-    height: 2px
-    left: 50%
-    margin-left: -25%
-    margin-top: -1px
-    position: absolute
-    top: 50%
-    width: 50%
-  &:before
-    transform: rotate(45deg)
-  &:after
-    transform: rotate(-45deg)
-  &:hover
-    background-color: rgba($black, 0.5)
-  // Sizes
-  &.is-small
-    height: 16px
-    width: 16px
-  &.is-medium
-    height: 32px
-    width: 32px
-  &.is-large
-    height: 40px
-    width: 40px
-
-%hamburger
-  cursor: pointer
-  display: block
-  height: $nav-height
-  position: relative
-  width: $nav-height
-  span
-    background-color: $text
-    display: block
-    height: 1px
-    left: 50%
-    margin-left: -7px
-    position: absolute
-    top: 50%
-    transition: none $speed $easing
-    transition-property: background, left, opacity, transform
-    width: 15px
-    &:nth-child(1)
-      margin-top: -6px
-    &:nth-child(2)
-      margin-top: -1px
-    &:nth-child(3)
-      margin-top: 4px
-  &:hover
-    background-color: $background
-  // Modifers
-  &.is-active
-    span
-      background-color: $link
-      &:nth-child(1)
-        margin-left: -5px
-        transform: rotate(45deg)
-        transform-origin: left top
-      &:nth-child(2)
-        opacity: 0
-      &:nth-child(3)
-        margin-left: -5px
-        transform: rotate(-45deg)
-        transform-origin: left bottom
-
-%loader
-  animation: spin-around 500ms infinite linear
-  border: 2px solid $border
-  border-radius: 290486px
-  border-right-color: transparent
-  border-top-color: transparent
-  content: ""
-  display: block
-  height: 16px
-  position: relative
-  width: 16px
-
-%unselectable
-  -webkit-touch-callout: none
-  -webkit-user-select: none
-  -moz-user-select: none
-  -ms-user-select: none
-  user-select: none