html {
  font-size: $base-font-size;
}

/**
* Reset some basic elements
*/
body, h1, h2, h3, h4, h5, h6,
p, blockquote, pre, hr,
dl, dd, ol, ul, figure {
 margin: 0;
 padding: 0;

}


body {
  font: $base-font-weight #{$base-font-size}/#{$base-line-height} $base-font-family;
  color: $text-color;
  background-color: $background-color;
  -webkit-text-size-adjust: 100%;
  -webkit-font-feature-settings: "kern" 1;
     -moz-font-feature-settings: "kern" 1;
       -o-font-feature-settings: "kern" 1;
          font-feature-settings: "kern" 1;
  font-kerning: normal;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  overflow-wrap: break-word;
} 

/**
* Set `margin-bottom` to maintain vertical rhythm
*/
h1, h2, h3, h4, h5, h6,
p, blockquote, pre,
ul, ol, dl, figure,
%vertical-rhythm {
 margin-bottom: $spacing-unit / 2;
}

hr {
 margin-top: $spacing-unit;
 margin-bottom: $spacing-unit;
}

/**
* `main` element
*/
main {
 display: block;
  /* Default value of `display` of `main` element is 'inline' in IE 11. */
  animation-name: text_trans;
  animation-duration: 1s;
  -webkit-animation-timing-function: ease-in;
  animation-timing-function: ease-in;
  @keyframes text_trans {
    0%   {opacity: 0%;}
    20%  {opacity: 20%;}
    50%  {opacity: 50%;}
    70%  {opacity: 70%;}
    90%  {opacity: 90%;}
    100% {opacity: 100%;}
  }
}

/**
* Images
*/
img {
 max-width: 100%;
 vertical-align: middle;
}



/**
* Figures
*/
figure > img {
 display: block;
}

figcaption {
 font-size: $small-font-size;
}



/**
* Lists
*/
ul, ol {
 margin-left: $spacing-unit;
}

li {
 > ul,
 > ol {
   margin-bottom: 0;
 }
}



/**
* Headings
*/
h2, h3, h4, h5, h6 {
 font-weight: 650;
 font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

h1 {
 font-weight: 700;
 font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
 font-size: 35px;
}


/**
* Links
*/
a {
 color: $link-base-color;
 text-decoration: none;
 transition: $transition-links;

 &:visited {
   color: $link-visited-color;
 }

 &:hover {
   color: $link-hover-color;
   text-decoration: none;
 }
}


/**
* Blockquotes
*/
blockquote {
 color: $blockquote-text-color;
 border-left: 4px solid $border-color-01;
 padding-left: $spacing-unit / 2;
 @include relative-font-size(1.125);
 font-style: italic;

 > :last-child {
   margin-bottom: 0;
 }

 i, em {
   font-style: normal;
 }
}



/**
* Code formatting
*/
pre,
code {
 font-family: $code-font-family;
 font-size: 0.9375em;
 border: 1px solid $border-color-01;
 border-radius: 4px;
 background-color: $code-background-color;
}

code {
 padding: 1px 5px;
}

pre {
 padding: 8px 12px;
 overflow-x: auto;

 > code {
   border: 0;
   padding-right: 0;
   padding-left: 0;
 }
}

.highlight {
 border-radius: 3px;
 background: $code-background-color;
 @extend %vertical-rhythm;

 .highlighter-rouge & {
   background: $code-background-color;
 }
}



/**
* Wrapper
*/
.wrapper {
 max-width: calc(#{$content-width} - (#{$spacing-unit}));
 margin-right: auto;
 margin-left: auto;
 padding-right: $spacing-unit / 2;
 padding-left: $spacing-unit / 2;
 @extend %clearfix;

 @media screen and (min-width: $on-large) {
   max-width: calc(#{$content-width} - (#{$spacing-unit} * 2));
   padding-right: $spacing-unit;
   padding-left: $spacing-unit;
 }
}

.wrapper_header {
 padding-left: 20px;
 padding-right: auto;
 @extend %clearfix;
 @media screen and (min-width: $on-medium) {
   padding-right: 70px;
   padding-left: 70px;
 }
}

.wrapper_footer {
max-width: calc(#{$content-width} - (#{$spacing-unit}));
margin-right: auto;
margin-left: auto;
padding-right: $spacing-unit / 2;
padding-left: $spacing-unit / 2;
@extend %clearfix;

@media screen and (min-width: $on-large) {
  max-width: calc(#{$content-width} - (#{$spacing-unit} * 2));
  padding-right: $spacing-unit;
  padding-left: $spacing-unit;
}
}



/**
* Clearfix
*/
%clearfix:after {
 content: "";
 display: table;
 clear: both;
}



/**
* Icons
*/

.stackoverflow {
 color: #f66a0a;
}

.youtube {
 color: #dd0505;
}

.github {
 color: #f9f9f9
}

.svg-icon {
 width: 16px;
 height: 16px;
 display: inline-block;
 fill: currentColor;
 padding: 5px 3px 2px 5px;
 vertical-align: text-bottom;
}


/**
* Tables
*/
table {
 margin-bottom: $spacing-unit;
 width: 100%;
 text-align: $table-text-align;
 color: $table-text-color;
 border-collapse: collapse;
 border: 1px solid $table-border-color;
 tr {
   &:nth-child(even) {
     background-color: $table-zebra-color;
   }
 }
 th, td {
   padding: ($spacing-unit / 3) ($spacing-unit / 2);
 }
 th {
   background-color: $table-header-bg-color;
   border: 1px solid $table-header-border;
 }
 td {
   border: 1px solid $table-border-color;
 }

 @include media-query($on-laptop) {
   display: block;
   overflow-x: auto;
   -webkit-overflow-scrolling: touch;
           -ms-overflow-style: -ms-autohiding-scrollbar;
 }
}