How to set the centering style with CSS? Brief analysis of methods

CSS is one of the most commonly used style sheet languages ​​in web design. It can not only change the color, font, size and other attributes of web page elements, but also achieve functions such as centering and layout. In web design, the centering of elements is very important, so this article will introduce you to how to use CSS to set the centering style.

1. Text centering

In web design, text centering is a very common centering method, which can make the web page layout neater and more beautiful. The main method of setting text centering in CSS is There are two types:

1. Horizontal centering

The method to set the horizontal centering of text in CSS is very simple, just add text-align:center to the label. Achieve horizontal centering of text. For example:

Horizontal centering of text

2. Vertical centering

Compared with horizontal centering, vertical centering is less used in web design, but in some specific scenarios, such as floating elements with a responsive experience, vertical centering can play a key role. Methods to achieve vertical centering in CSS usually include the following:

(1) Implementation through padding

This method is to use the padding attribute to reduce the internal space of the element accordingly (both up and down can be ), so that the center of the element is aligned with the inline height (set the margin of an element to auto, so that vertical centering can be achieved). For example:

Vertical centering of text

Note: Here 50% is the percentage relative to the height of the parent element (that is, the distance from the top of the current element to the top of the parent element accounts for 50% of the height of the entire parent element), and -10px is half the height of the current element. Setting this up will center the text vertically.

(2) By setting the row height

In CSS, you can use row height to achieve vertical centering. This method is also relatively simple. You only need to set the row height to be the same as the box. The heights are equal. For example:

Vertical centering of text

2. Centering of images

Image centering is also an important centering method in web design, and can be easily implemented in CSS. The specific method is as follows:

1. Horizontal centering

To achieve horizontal centering of the image, just set the width of the container outside the image to 100% and the width of the image to the actual width That’s it. For example:

After setting this, you can center the image horizontally.

2. Vertical centering

To achieve vertical centering of images, the method is similar to the vertical centering of text. You can use line-height or padding to achieve it. For example:

(1) Use line-height:

(2) Use padding:

Note: 50% here is the percentage relative to the height of the parent element (that is, the current element The distance from the top to the top of the parent element accounts for 50% of the height of the entire parent element), and -250px is half the height of the current element. This setting will center the image vertically.

Summary:

The above is how to set the centering in CSS. Both text and images can be centered horizontally and vertically through attributes such as text-align, line-height and padding. In web design, centering is very important. I hope that through the introduction of this article, readers can master the skills of CSS centering and better achieve the effect of web design.

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