How to set this button to the center of the x axis using css?

Question

I tried to set this button to the center of the x axis using css, but it does not work.

How can i do this?

https://jsfiddle.net/9e9rb6L5/

this is html code.

<div class="one">
    <div class="two">start now</div>    
</div>

and this is css.

.one{
    height: 66px;
    line-height: 36px;
    text-align: center;
    margin: 0 auto;
}
.two{
    float: left;
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
}

Answer 1

Try the following: You need to add width: fit-content;a .one class.

.one{
    height: 66px;
    line-height: 36px;
    display:block;
  margin:0 auto;
       width: fit-content;
  text-align:center;
}
.two{
    float: left;
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
  
}

<div class="one">
    <div class="two">start now</div>    
</div>

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2. Another way: display:tablein.one class

.one{
    height: 66px;
    line-height: 36px;
    display:table;
    margin:0 auto;
    text-align:center;
  
}
.two{
    float: left;
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
  
}

<div class="one">
    <div class="two">start now</div>    
</div>

Run codeHide result

3. The third way to use a property flex.

.one{
    height: 66px;
    line-height: 36px;
    text-align: center;
    margin: 0 auto;
    display:flex;
    justify-content:center;
}
.two{
    float: left;
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
}

<div class="one">
    <div class="two">start now</div>    
</div>

Run codeHide result

Answer 2

margin: 0 auto; width required

https://jsfiddle.net/9e9rb6L5/1/

Answer 3

dom:

1. set the wrapper `text-align:center;` 
2. and then set the dom `margin:0 auto;` 
3. At last need to set the width of the dom.

.one float:left; in .two , .

Answer 4

https://jsfiddle.net/qoh1qLd7/

width:25% margin:auto 1

    .one{
    height: 66px;
    line-height: 36px;
    text-align: center;
    width:25%;
    margin:auto;
}

float:left

.two{  
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
}

Answer 5

: https://jsfiddle.net/ka1h5a6k/

.one{
    height: 66px;
    line-height: 36px;
    text-align: center;
    margin: 0 auto;
    width: 150px;
}
.two{
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
}

Answer 6

• To center the div : remove the float.
• So that the width automatically matches the size of the text : display: inline-block;

No need to change anything in .one!

Run the snippet to see it in action.

.one{
    height: 66px;
    line-height: 36px;
    text-align: center;
    margin: 0 auto;
}
.two{
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
    display:inline-block;
}

<div class="one">
    <div class="two">start now</div>    
</div>

<p>Width changes automatically:, e.g. </p>

<div class="one">
    <div class="two">Another div with longer text</div>    
</div>

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Float takes items out of the page stream, so they cannot be positioned. Do not use a float unless you really want to float it!

Answer 7

remove float: leave in code

.one{
    height: 66px;
    line-height: 36px;
    text-align: center;
    margin: 0 auto;
}
.two{
    background-color: #3498db;
    color: white;
    font-size: 24px;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 20px;
    padding-right: 20px;
}

<div class="one">
    <div class="two">start now</div>    
</div>

Run codeHide result