CSS フォームとかで使えるステップバー作ってみた。

フォームのイマココ！とか表示できるシンプルなステップバーをCSSだけで作ってみた。
当然のようにIE8とかは無視してます。ご了承下さい。

SAMPLE

See the Pen SIMPLE FORM STEP BAR by Chaika (@chaika-design) on CodePen.

HTML

<ol class="stepBar step3">
  <li class="step current">STEP1</li>
  <li class="step">STEP2</li>
  <li class="step">STEP3</li>
</ol>

Compass (SCSS)

.stepBar {
  position: relative;
  list-style: none;
  margin: 0 0 1em;
  padding: 0;
  text-align: center;
  width: 100%;
  @include clearfix;
  .step {
    position: relative;
    float: left;
    display: inline-block;
    line-height: 40px;
    padding: 0 40px 0 20px;
    background-color: #eee;
    @include box-sizing(border-box);
    &:before,
    &:after {
      position: absolute;
      left: -15px;
      display: block;
      content: '';
      background-color: #eee;
      border-left: 4px solid #FFF;
      width: 20px;
      height: 20px;
    }
    &:after {
      top: 0;
      @include transform(skew(30deg));
    }
    &:before {
      bottom: 0;
      @include transform(skew(-30deg));
    }
    &:first-child {
      @include border-left-radius(4px);
      &:before,
      &:after {
        content: none;
      }
    }
    &:last-child {
      @include border-right-radius(4px);
    }
    &.current {
      color: #FFF;
      background-color: $colGreen;
      &:before,
      &:after {
        background-color: $colGreen;
      }
    }
  }
  &.step2 {
    .step {
      width: 50%;
    }
  }
  &.step3 {
    .step {
      width: 33.333%;
    }
  }
  &.step4 {
    .step {
      width: 25%;
    }
  }
  &.step5 {
    .step {
      width: 20%;
    }
  }
}

CSS

コンパイルされたCSS

.stepBar {
  position: relative;
  list-style: none;
  margin: 0 0 1em;
  padding: 0;
  text-align: center;
  width: 100%;
  overflow: hidden;
  *zoom: 1;
}
.stepBar .step {
  position: relative;
  float: left;
  display: inline-block;
  line-height: 40px;
  padding: 0 40px 0 20px;
  background-color: #eee;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
.stepBar .step:before, .stepBar .step:after {
  position: absolute;
  left: -15px;
  display: block;
  content: '';
  background-color: #eee;
  border-left: 4px solid #FFF;
  width: 20px;
  height: 20px;
}
.stepBar .step:after {
  top: 0;
  -moz-transform: skew(30deg);
  -ms-transform: skew(30deg);
  -webkit-transform: skew(30deg);
  transform: skew(30deg);
}
.stepBar .step:before {
  bottom: 0;
  -moz-transform: skew(-30deg);
  -ms-transform: skew(-30deg);
  -webkit-transform: skew(-30deg);
  transform: skew(-30deg);
}
.stepBar .step:first-child {
  -moz-border-radius-topleft: 4px;
  -webkit-border-top-left-radius: 4px;
  border-top-left-radius: 4px;
  -moz-border-radius-bottomleft: 4px;
  -webkit-border-bottom-left-radius: 4px;
  border-bottom-left-radius: 4px;
}
.stepBar .step:first-child:before, .stepBar .step:first-child:after {
  content: none;
}
.stepBar .step:last-child {
  -moz-border-radius-topright: 4px;
  -webkit-border-top-right-radius: 4px;
  border-top-right-radius: 4px;
  -moz-border-radius-bottomright: 4px;
  -webkit-border-bottom-right-radius: 4px;
  border-bottom-right-radius: 4px;
}
.stepBar .step.current {
  color: #FFF;
  background-color: #26bfa1;
}
.stepBar .step.current:before, .stepBar .step.current:after {
  background-color: #26bfa1;
}
.stepBar.step2 .step {
  width: 50%;
}
.stepBar.step3 .step {
  width: 33.333%;
}
.stepBar.step4 .step {
  width: 25%;
}
.stepBar.step5 .step {
  width: 20%;
}