填充容器宽度的按钮

Question

我有以下用于 CSS 按钮组的代码：

基本上，我的目标是让 .button-group 成为 .container 的 100%，按钮均匀分布。

我尝试添加：

.button-group .button {
    width: 33.3%; /* There is three buttons, so 100/3% */
}

但它在最后留下一个空隙（不是 100% 宽度）？

Answer 1

如果使用 float，则不能均匀分布按钮。

相反，您可以使用 flexbox：

.button-group {
    display: flex;
    justify-content: space-between;
}

.container {
  width: 600px;
  background: yellow;
}
.button {
  display: inline-block;
  height: 45px;
  padding: 0 30px;
  color: #555;
  text-align: center;
  font-weight: 700;
  line-height: 45px;
  letter-spacing: .01rem;
  text-decoration: none;
  white-space: nowrap;
  background-color: transparent;
  border-radius: 4px;
  border: 1px solid darken($GRAY, 10%);
  font-size: em(13);
  cursor: pointer;
  box-sizing: border-box;
  background: teal;
}
.button-group {
  display: inline-block;
  list-style: none;
  padding: 0;
  margin: 0;
  /* IE hacks */
  zoom: 1;
  *display: inline;
}
.button + .button,
.button + .button-group,
.button-group + .button,
.button-group + .button-group {
  margin-left: 15px;
}
.button-group li {
  float: left;
  padding: 0;
  margin: 0;
}
.button-group .button {
  float: left;
  margin-left: -1px;
}
.button-group > .button:not(:first-child):not(:last-child),
.button-group li:not(:first-child):not(:last-child) .button {
  border-radius: 0;
}
.button-group > .button:first-child,
.button-group li:first-child .button {
  margin-left: 0;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.button-group > .button:last-child,
.button-group li:last-child > .button {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.button-group {
  display: flex;
  justify-content: space-between;
}

<div class='container'>
  <div class='button-group'>
    <a class='button'>Test Uno</a>
    <a class='button'>Test Dos</a>
    <a class='button'>Test Tres</a>
  </div>
</div>

Answer 2

将position: relative应用到.button-group。

从 .button 和以下内容中删除 margin-left: -1px：

.button + .button,
.button + .button-group,
.button-group + .button,
.button-group + .button-group {
    margin-left: 15px;
}

在 .button 中使用 display: inline-block 而不是 float: left。
删除标记中 a 标签之间的 white-space。

Updated Fiddle

.container {
  width: 600px;
  background: yellow;
}
.button {
  display: inline-block;
  height: 45px;
  padding: 0 30px;
  color: #555;
  text-align: center;
  font-weight: 700;
  line-height: 45px;
  letter-spacing: .01rem;
  text-decoration: none;
  white-space: nowrap;
  background-color: transparent;
  border-radius: 4px;
  border: 1px solid darken($GRAY, 10%);
  font-size: em(13);
  cursor: pointer;
  box-sizing: border-box;
  background: teal;
  width: 33.33333333%;
}
.button-group {
  position: relative;
  width: 100%;
  display: inline-block;
  list-style: none;
  padding: 0;
  margin: 0;
  /* IE hacks */
  zoom: 1;
  *display: inline;
}
.button-group li {
  float: left;
  padding: 0;
  margin: 0;
}
.button-group .button {
  display: inline-block;
}
.button-group > .button:not(:first-child):not(:last-child),
.button-group li:not(:first-child):not(:last-child) .button {
  border-radius: 0;
}
.button-group > .button:first-child,
.button-group li:first-child .button {
  margin-left: 0;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.button-group > .button:last-child,
.button-group li:last-child > .button {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

<div class='container'>
  <div class='button-group'>
    <a class='button'>Test Uno</a
    ><a class='button'>Test Dos</a
    ><a class='button'>Test Tres</a>
  </div>
</div>

填充容器宽度的按钮

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