Flexbox Timeline Layout



Bố trí dòng thời gian flexbox dựa trên cột. Mục tiêu là để có HTML rõ ràng, ngữ nghĩa trong khi tạo bố cục theo thời gian

1. HTML

							

A Flexbox Timeline

All cards must be the same height and width for space calculations on large screens.

01

Subtitle Technology

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02

Subtitle Confidence

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03

Subtitle Adaptation

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04

Subtitle Consistency

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05

Subtitle Conversion

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Graphic

2. CSS

							/* SCSS nhe anh em */

/* Media Queries */

@mixin mq-xs {
  @media (min-width: 320px) {
    @content;
  }
}

@mixin mq-sm {
  @media (min-width: 480px) {
    @content;
  }
}

@mixin mq-md {
  @media (min-width: 720px) {
    @content;
  }
}

@mixin mq-lg {
  @media (min-width: 1000px) {
    @content;
  }
}

$background: #f7f7f7;
$box-shadow: 0px 1px 22px 4px rgba(0, 0, 0, 0.07);
$border: 1px solid rgba(191, 191, 191, 0.4);
$items: 5;
$rows: ceil($items/2);

/* Card sizing */

$card-height: 400px;
$card-width: 450px;
$inner-margin: 15px;
$number-size: 35px;
$stagger: 180px;
$outer-margin: 90px;
$marker-size: 9px;

/* Colors */

$steps: #46b8e9;
$colors: #46b8e9,
#3ee9d1,
#ce43eb,
#4d92eb;
$timeline: #bdbdbd;

/* Calculations */

$container-height: $rows * ($card-height + $outer-margin) + $stagger;
$container-width: $card-width*2 + $outer-margin*3;
$head-height: $number-size + 50;
$body-height: $card-height - $head-height;
$marker-dist: $card-width + $outer-margin/2 - $marker-size/2;

/* Placeholders */

@include mq-lg {
  %arrow {
    position: absolute;
    content: "";
    width: 0;
    height: 0;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
  }
  %marker {
    position: absolute;
    content: "";
    width: $marker-size;
    height: $marker-size;
    background-color: $timeline;
    border-radius: $marker-size;
    box-shadow: 0px 0px 2px 8px $background;
  }
}


/* Some Cool Stuff */

$counter: $items - $rows + 2;
@for $i from 1 through $rows {
  .demo-card:nth-child(#{$i*2-1})   { order: $i }
  .demo-card:nth-child(#{$i*2})     { order: $counter }
  $counter: $counter + 1;
}

/* Border Box */

* {
  box-sizing: border-box;
}

/* Fonts */

body {
  font-family: Roboto;
}

#timeline {
  padding: 100px 0;
  background: $background;
  border-top: $border;
  border-bottom: $border;
  h1 {
    text-align: center;
    font-size: 3rem;
    font-weight: 200;
    margin-bottom: 20px;
  }
  p.leader {
    text-align: center;
    max-width: 90%;
    margin: auto;
    margin-bottom: 45px;
  }
  .demo-card-wrapper {
    position: relative;
    margin: auto;
    @include mq-lg {
      display: flex;
      flex-flow: column wrap;
      width: $container-width;
      height: $container-height;
      margin: 0 auto;
    }
    &::after {
      z-index: 1;
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      border-left: $border;
      @include mq-lg {
        border-left: 1px solid $timeline;
      }
    }
  }
  .demo-card {
    position: relative;
    display: block;
    margin: 10px auto 80px;
    max-width: 94%;
    z-index: 2;
    @include mq-sm {
      max-width: 60%;
      box-shadow: $box-shadow;
    }
    @include mq-md {
      max-width: 40%;
    }
    @include mq-lg {
      max-width: $card-width;
      height: $card-height;
      margin: $outer-margin;
      margin-top: $outer-margin/2;
      margin-bottom: $outer-margin/2;
      &:nth-child(odd) {
        margin-right: $outer-margin/2;
        .head::after {
          @extend %arrow;
          border-left-width: 15px;
          border-left-style: solid;
          left: 100%;
        }
        .head::before {
          @extend %marker;
          left: $marker-dist + 1;
        }
      }
      &:nth-child(even) {
        margin-left: $outer-margin/2;
        .head::after {
          @extend %arrow;
          border-right-width: 15px;
          border-right-style: solid;
          right: 100%;
        }
        .head::before {
          @extend %marker;
          right: $marker-dist - 1;
        }
      }
      &:nth-child(2) {
        margin-top: $stagger;
      }
    }
    .head {
      position: relative;
      display: flex;
      align-items: center;
      color: #fff;
      font-weight: 400;
      .number-box {
        display: inline;
        float: left;
        margin: $inner-margin;
        padding: 10px;
        font-size: $number-size;
        line-height: $number-size;
        font-weight: 600;
        background: rgba(0, 0, 0, 0.17);
      }
      h2 {
        text-transform: uppercase;
        font-size: 1.3rem;
        font-weight: inherit;
        letter-spacing: 2px;
        margin: 0;
        padding-bottom: 6px;
        line-height: 1rem;
        @include mq-sm {
          font-size: 165%;
          line-height: 1.2rem;
        }
        span {
          display: block;
          font-size: 0.6rem;
          margin: 0;
          @include mq-sm {
            font-size: 0.8rem;
          }
        }
      }
    }
    .body {
      background: #fff;
      border: $border;
      border-top: 0;
      padding: $inner-margin;
      @include mq-lg {
        height: $body-height;
      }
      p {
        font-size: 14px;
        line-height: 18px;
        margin-bottom: $inner-margin;
      }
      img {
        display: block;
        width: 100%;
      }
    }
    @for $i from 1 through $items {
      &--step#{$i} {
        $color: nth($colors, ((($i - 1) % 4) + 1));
        background-color: $color;
        .head::after {
          border-color: $color;
        }
      }
    }
  }
}						

3. JAVASCRIPT

													

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