如何在具有不同大小的子div的父div内使文本居中(flexbox)

时间:2019-06-25 23:28:55

标签: html css flexbox centering text-align

我正在使用Flexbox创建一个网站(我在使用它时还很陌生)。我想将站点名称和菜单下拉按钮放在同一行。我可以通过Flexbox成功完成此操作,但是标题不在页面本身的中心。我知道这是因为菜单按钮的flex-grow为1,而标题的flex-grow为8。我这样做是为了间隔,但是现在Title不在整个页面的中心。

我尝试将标题div保留为空白,仅在div之外编写标题,但这会将文本放在父容器之前。

<body>
    <div class="parent container">
        <!--Navigational Bar-->
        <div class="Nav">
            <div id="Nav_Button">
                <p>Button</p>
            </div>
            <div id="Nav_Title">
                <h3>Super Snack Stadium</h3>
            </div>
        </div>
    </div>
</body>

.parent_container {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: flex-start;
}

/*Containers within ".parent container"*/

.Nav {
    border: 1px solid black;
    text-align: center;
    /*Flex Child Code*/
    order:1;
    /*Flex Parent Code*/
    display: flex;
    flex-direction: row;

}

/*--------Children of .Nav ---------*/

#Nav_Button {
    border: 1px solid black;
    /*Flex Child Code*/
    order: 1;
    flex-grow: 1;
}

#Nav_Title {
    border: 1px solid black;
    text-align: center;
    /*Flex Child Code*/
    order: 2;
    flex-grow: 8;
}

如果可能的话,我希望能够使用Flexbox将整个页面的标题居中(而不仅仅是在其所在的容器内)。

4 个答案:

答案 0 :(得分:0)

因此,如果我对您的理解正确,那么您已经处在正确的轨道上,但是您没有指定它应该居中。

#Nav_Button {

  display: flex;

  border: 1px solid black;
  /*Flex Child Code*/
  order: 1;
  flex-grow: 1;

  align-items: center;
  justify-content: center;
}

请参阅此处,您使用了div,并且该div具有默认显示:block; https://www.w3schools.com/cssref/css_default_values.asp

这里是align-items和justify-content https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Flexible_Box_Layout/Aligning_Items_in_a_Flex_Container

答案 1 :(得分:0)

步骤1:设置Nav position:relative;

 .Nav {
   border: 1px solid black;
   text-align: center;
   /*Flex Child Code*/
   order:1;
  /*Flex Parent Code*/
  display: flex;
  flex-direction: row;
  position:relative;
}

步骤2:h3设为绝对。

h3 {
  position:absolute;
}

现在,h3已从文档流中删除,但可以根据最近的relative元素进行定位。

在这种情况下,我们将.Nav设为relative。因此,h3将使用.Nav作为参考。由于.Nav占据了整个屏幕宽度,因此我们所要做的就是使用h3.Nav

left定位到transform的中心

第3步:

h3 {
  position:absolute;
  left:50%;
  transform:translateX(-50%);
}

最终

.parent_container {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: flex-start;
}

/*Containers within ".parent container"*/

.Nav {
   border: 1px solid black;
   text-align: center;
   /*Flex Child Code*/
   order:1;
  /*Flex Parent Code*/
  display: flex;
  flex-direction: row;
  position:relative;
}
/*--------Children of .Nav ---------*/

#Nav_Button {
    border: 1px solid black;
    /*Flex Child Code*/
    order: 1;
    flex-grow: 1;
}

#Nav_Title {
    border: 1px solid black;
    text-align: center;
    /*Flex Child Code*/
    order: 2;
    flex-grow: 8;
}
h3 {
  position:absolute;
  left:50%;
  transform:translateX(-50%);
}
<div class="Nav">
            <div id="Nav_Button"><p>Button</p></div>
            <div id="Nav_Title"><h3>Super Snack Stadium</h3></div>
        </div>

答案 2 :(得分:0)


.parent_container {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: flex-start;
}

/*Containers within ".parent container"*/

.Nav {
    border: 1px solid black;
    text-align: center;
    /*Flex Child Code*/
    order:1;
    /*Flex Parent Code*/
    display: flex;
    flex-direction: row;
    position: relative;

}

/*--------Children of .Nav ---------*/

#Nav_Button {
    border: 1px solid black;
    /*Flex Child Code*/
    width: 300px;
}

#Nav_Title {
    border: 1px solid black;
    text-align: center;
    /*Flex Child Code*/
    position: absolute;
    width: 100%;
}
#Nav_Title h3 {
    margin: 14px;
}```

答案 3 :(得分:0)

.parent_container {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  justify-content: flex-start;
}


/*Containers within ".parent container"*/

.Nav {
  border: 1px solid black;
  text-align: center;
  /*Flex Child Code*/
  order: 1;
  /*Flex Parent Code*/
  display: flex;
  flex-direction: row;
  position: relative;
}

h3 {
    position: absolute;
    width: 100%;
    left: 0;
    top: -5px;
}

/*--------Children of .Nav ---------*/

#Nav_Button {
  border: 1px solid black;
  /*Flex Child Code*/
  order: 1;
  flex-grow: 1;
}

#Nav_Title {
  border: 1px solid black;
  text-align: center;
  /*Flex Child Code*/
  order: 2;
  flex-grow: 8;
}
<div class="parent container">
  <!--Navigational Bar-->
  <div class="Nav">
    <div id="Nav_Button">
      <p>Button</p>
    </div>
    <div id="Nav_Title">
      <h3>Super Snack Stadium</h3>
    </div>
  </div>
</div>