flex布局（转载阮一峰）

<div class="first-face">

  <span class="pip"></span>

</div>

<div class="second-face">

  <span class="pip"></span>

  <span class="pip"></span>

</div>

<div class="third-face">

  <span class="pip"></span>

  <span class="pip"></span>

  <span class="pip"></span>

</div>

<div class="fourth-face">

  <div class="column">

    <span class="pip"></span>

    <span class="pip"></span>

  </div>

  <div class="column">

    <span class="pip"></span>

    <span class="pip"></span>

  </div>

</div>

<div class="fifth-face">

  <div class="column">

    <span class="pip"></span>

    <span class="pip"></span>

  </div>

  <div class="column">

    <span class="pip"></span>

  </div>

  <div class="column">

    <span class="pip"></span>

    <span class="pip"></span>

  </div>

</div>

<div class="sixth-face">

  <div class="column">

    <span class="pip"></span>

    <span class="pip"></span>

    <span class="pip"></span>

  </div>

  <div class="column">

    <span class="pip"></span>

    <span class="pip"></span>

    <span class="pip"></span>

  </div>

</div>

.first-face {

  display: flex;

  align-items: flex-end;

  justify-content: flex-end;

}

.second-face {

  display: flex;

  justify-content:space-between;

}

.second-face .pip:nth-of-type(2) {

  align-self: flex-end;

}

.third-face {

  display: flex;

  justify-content: space-between;

}

.third-face .pip:nth-of-type(2) {

  align-self: center;

}

.third-face .pip:nth-of-type(3) {

  align-self: flex-end;

}

.fourth-face, .sixth-face {

  display: flex;

  justify-content: space-between;

}

.fourth-face .column, .sixth-face .column {

  display: flex;

  flex-direction: column;

  justify-content: space-between;

}

.fifth-face {

  display: flex;

  justify-content: space-between;

}

.fifth-face .column {

  display: flex;

  flex-direction: column;

  justify-content: space-between;

}

.fifth-face .column:nth-of-type(2) {

  justify-content: center;

}

/* OTHER STYLES */

* {

  box-sizing: border-box;

}

html, body {

  height: 100%;

}

body {

  display: flex;

  align-items: center;

  justify-content: center;

  vertical-align: center;

  flex-wrap: wrap;

  align-content: center;

  font-family: 'Open Sans', sans-serif;

  background: linear-gradient(top, #222, #333);

}

[class$="face"] {

  margin: 16px;

  padding: 4px;

  background-color: #e7e7e7;

  width: 104px;

  height: 104px;

  object-fit: contain;

  box-shadow:

    inset 0 5px white,

    inset 0 -5px #bbb,

    inset 5px 0 #d7d7d7,

    inset -5px 0 #d7d7d7;

  border-radius: 10%;

}

.pip {

  display: block;

  width: 24px;

  height: 24px;

  border-radius: 50%;

  margin: 4px;

  background-color: #333;

  box-shadow: inset 0 3px #111, inset 0 -3px #555;

}

flex实现骰子布局