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Table of Contents
How to achieve the small label effect in the design draft on the mobile terminal?
Problem description
Solution
Home Web Front-end HTML Tutorial How to accurately realize the small label effect in the design draft on the mobile terminal?

How to accurately realize the small label effect in the design draft on the mobile terminal?

Apr 04, 2025 pm 11:36 PM
css apple flex layout Center vertically css layout absolute positioning relative positioning red

How to achieve the small label effect in the design draft on the mobile terminal?

When designing mobile applications, how to accurately restore the small label effects in the design draft is a common problem. Especially when it is necessary to implement border wrapping text, and the text needs to be centered horizontally and vertically, there may be some challenges. Especially on different devices (such as Android and Apple), the effect of vertical centering may be biased. This article will explore two effective CSS methods to solve this problem.

Problem description

As shown in the figure, we want to achieve a small label effect where the label is wrapped with the text by a border, and the text is centered horizontally and vertically inside the label. However, when testing on mobile (Android and Apple), it was found that the centering effect in the vertical direction always had a visible deviation, and the display effect on different devices was inconsistent. We need to find a reliable way to achieve this effect.

How to accurately realize the small label effect in the design draft on the mobile terminal?

Solution

To solve the above problem, we can consider using the following two CSS layout methods:

  1. Flex layout

    Flex layout is a modern CSS layout method, which is very suitable for centering text in containers. The following is the specific CSS code:

     .tag {
      display: flex;
      justify-content: center; /* horizontal center*/
      align-items: center; /* vertical center*/
      line-height: normal; /* On some Androids, vertically centered*/
      border: 1px solid red;
    }

    In this example, display: flex makes .tag a Flex container, and justify-content: center and align-items: center implement horizontal and vertical centering, respectively. It is particularly important to note that the line-height: normal line is to ensure vertical centering on some Android devices.

  2. Absolute layout

    Absolute layout can also be used to achieve the centering effect of text. By using absolute positioning and transformation, the position of elements can be precisely controlled. The following is the specific CSS code:

     .tag {
      position: relative;
      border: 1px solid red;
    }
    .text {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
    }

    In this example, .tag is set as a relative positioning container, while .text is set as an absolute positioning. With left: 50% and top: 50%, move the upper left corner of the text to the center of the container, and then use transform: translate(-50%, -50%) to move the text to the upper left half of its width and height to achieve the centering effect.

Through the above two methods, the small tag effect in the design draft can be effectively realized on the mobile terminal, and the consistent vertical centering effect can be maintained on Android and Apple devices.

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