html - 使用伪类创建 CSS 进度条/步进器

Question

我正在构建一个步进器，试图实现这一目标:

我已经构建了以下内容，但问题是颜色溢出到栏的右侧。

.onboarding-steps {
    display: flex;
}

.onboarding-steps-container {
    background-color: #393D66;
    border-top: 1px solid #AEAEAE;
    border-bottom: 1px solid #AEAEAE;
    background-position: -50% 0;
}

.onboarding-step.active {
    color: white;
}

.onboarding-step.active ~ .onboarding-step {
    background-color: #fff;
}

.container-fluid {
    max-width: 94px;
    margin-right: auto;
    margin-left: auto;
}

.list-reset {
    list-style: none;
    padding: 0;
    margin: 0;
}

.onboarding-step {
    -ms-flex-positive: 1;
    flex-grow: 1;
    padding: 1.8rem 1rem 1.8rem 1.5rem;
}

<nav class="onboarding-steps-container">
  <div class="container-fluid">
    <ul class="list-reset clearfix onboarding-steps">
      <li class="onboarding-step">
        1
      </li>
      <li class="onboarding-step active">
        2
      </li>
      <li class="onboarding-step">
        3
      </li>
      <li class="onboarding-step">
        4
      </li>
    </ul>
  </div>
</nav>

我还尝试了使用伪选择器的变体:

li.onboarding-step.active:before {
    background-color: #f9f9f9;
    content: '';
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    height: 100%;
    position: absolute;
}

.onboarding-steps-container {
  position: relative;
}

在这种情况下，整个条形都会显示颜色。

Answer 1

这是一个示例。

.breadcrumb {
  margin: 0;
  padding: 0;
  list-style: none;
  overflow: hidden;
  height: 36px;
  display: flex;
  justify-content: center;
  align-items: center;
  align-content: center;
  padding-right: 35px;
}
.breadcrumb li {
  text-decoration: none;
  padding: 10px;
  position: relative;
  cursor: pointer;
  flex: auto;
  border: 1px solid red;
}
.breadcrumb li span {
  font-size: 11px;
  display: inline-block;
  width: 16px;
  line-height: 16px;
  border-radius: 50%;
  background-color: white;
  vertical-align: middle;
  text-align: center;
  margin-left: calc(100% - 8px);
}
.breadcrumb li:after {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-top: 50px solid transparent;
  border-bottom: 50px solid transparent;
  border-left: 30px solid #393D66;
  position: absolute;
  top: 50%;
  margin-top: -50px;
  left: 100%;
  z-index: 2;
}
.breadcrumb li:before {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-top: 50px solid transparent;
  border-bottom: 50px solid transparent;
  border-left: 30px solid white;
  position: absolute;
  top: 50%;
  margin-top: -50px;
  margin-left: 2px;
  left: 100%;
  z-index: 1;
}
li {
  background-color: #393D66;
}
li:first-child {} li.active ~ li {
  background-color: #f5f5f5;
}
li.active ~ li:after {
  border-left-color: #f5f5f5;
}
li.active ~ li:before {
  border-left-color: #d5d5d5;
}
li.active ~ li span {
  background-color: #c5c5c5;
  color: white;
}

<div class="stepper">
  <ul class="breadcrumb">
    <li><span>1</span>
    </li>
    <li><span>2</span>
    </li>
    <li class="active"><span>3</span>
    </li>
    <li><span>4</span>
    </li>
    <li><span>5</span>
    </li>
  </ul>
</div>