Compass Flexbox

Horizontally & Vertically Centered Box

Justify-content, the CSS property that launched a thousand blog posts

HOLY SHIT

Source Code

.centered-box-container {
    @include align-items(center);
    @include display-flex();
    @include justify-content(center);
    background-color: rgba(skyblue, 0.2);
    height: 500px;
    width: 100%;
}

.centered-box-container {
    -webkit-box-align: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -moz-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    background-color: rgba(135, 206, 235, 0.2);
    height: 500px;
    width: 100%;
}

Nav

One child item can be set up "fill" all remaining space in a container

Home

Shop

Sports

Help

Cart

Join

Source Code

.flex-nav {
  @include display-flex();
  width: 100%;
}

  %flex-nav-item {
    @include align-items(center);
    @include display-flex();
    @include justify-content(center);
    background-color: #ccc;
    border: {
      left: 1px solid #999;
    };
    padding: 5px 10px;
  }

  .flex-nav-item {
    @extend %flex-nav-item;

    &:hover {
      background-color: #aaa;
    }
  }

  .flex-nav-item--search {
    @extend %flex-nav-item;
    @include flex(1);

    label {
      display: block;
      margin: 0 auto;
      max-width: 500px;
      width: 100%;
    }

    input {
      @include box-sizing(border-box);
      display: block;
      width: 100%;
    }
  }

.flex-nav {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  width: 100%;
}

.flex-nav-item, .flex-nav-item--search {
  -webkit-box-align: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -moz-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  background-color: #ccc;
  border-left: 1px solid #999;
  padding: 5px 10px;
}

.flex-nav-item:hover {
  background-color: #aaa;
}

.flex-nav-item--search {
  -webkit-box-flex: 1;
  -moz-box-flex: 1;
  -ms-flex: 1;
  -webkit-flex: 1;
  flex: 1;
}

.flex-nav-item--search label {
  display: block;
  margin: 0 auto;
  max-width: 500px;
  width: 100%;
}

.flex-nav-item--search input {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  display: block;
  width: 100%;
}

Holy Grail Layout

Flexbox finally gives use source-order independence

Desktop

Header

Main

Mobile (Same Markup)

Header

Main

Source Code

$holy-grail-margin: 5px;

%holy-grail-item {
  padding: 10px;

  .is-mobile & {
    @include flex(1);
    @include order(1);
  }
}

.holy-grail {
  @include display-flex();
  @include flex-direction(column);
  margin: 0 auto;
  text-align: center;
  width: 100%;

  &.is-mobile {
    max-width: 320px;
  }

  > header, > footer {
    @extend %holy-grail-item;
    background-color: Moccasin;
  }
}

  .holy-grail-body {
    @include display-flex();
    @include flex-direction(row);
    margin: $holy-grail-margin 0;
    width: 100%;

    .is-mobile & {
      @include flex-direction(column);
      margin: 0;
    }

    article {
      @extend %holy-grail-item;
      @include flex(3);
      @include order(2);
      background-color: PaleTurquoise;
      margin: 0 $holy-grail-margin;
      min-height: 100px;

      .is-mobile & {
        margin: 0;
      }
    }

    nav {
      @extend %holy-grail-item;
      @include flex(1);
      @include order(1);
      background-color: hotpink;
    }

    aside {
      @extend %holy-grail-item;
      @include flex(1);
      @include order(3);
      background-color: Thistle;
    }
  }

.holy-grail {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-orient: vertical;
  -moz-box-orient: vertical;
  -ms-flex-direction: column;
  -webkit-flex-direction: column;
  flex-direction: column;
  margin: 0 auto;
  max-width: 800px;
  text-align: center;
}

.holy-grail.is-mobile {
  max-width: 320px;
}

.holy-grail > header, .holy-grail > footer {
  background-color: Moccasin;
}

.holy-grail-body {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-orient: horizontal;
  -moz-box-orient: horizontal;
  -ms-flex-direction: row;
  -webkit-flex-direction: row;
  flex-direction: row;
  margin: 5px 0;
  width: 100%;
}

.is-mobile .holy-grail-body {
  -webkit-box-orient: vertical;
  -moz-box-orient: vertical;
  -ms-flex-direction: column;
  -webkit-flex-direction: column;
  flex-direction: column;
  margin: 0;
}

.holy-grail-body article {
  -webkit-box-flex: 3;
  -moz-box-flex: 3;
  -ms-flex: 3;
  -webkit-flex: 3;
  flex: 3;
  -webkit-box-ordinal-group: 2;
  -moz-box-ordinal-group: 2;
  -ms-flex-order: 2;
  -webkit-order: 2;
  order: 2;
  background-color: PaleTurquoise;
  margin: 0 5px;
  min-height: 100px;
}

.is-mobile .holy-grail-body article {
  margin: 0;
}

.holy-grail-body nav {
  -webkit-box-flex: 1;
  -moz-box-flex: 1;
  -ms-flex: 1;
  -webkit-flex: 1;
  flex: 1;
  -webkit-box-ordinal-group: 1;
  -moz-box-ordinal-group: 1;
  -ms-flex-order: 1;
  -webkit-order: 1;
  order: 1;
  background-color: hotpink;
}

.holy-grail-body aside {
  -webkit-box-flex: 1;
  -moz-box-flex: 1;
  -ms-flex: 1;
  -webkit-flex: 1;
  flex: 1;
  -webkit-box-ordinal-group: 3;
  -moz-box-ordinal-group: 3;
  -ms-flex-order: 3;
  -webkit-order: 3;
  order: 3;
  background-color: Thistle;
}

Use these mixins in your next Sass + Compass project: Download the extension