How to set the width of table in css

In web design and development, the use of tables is very common. Setting the table width is also one of the skills that must be mastered. There are several ways to set table width in CSS. This article will introduce these methods and their application scenarios in detail.

1. Set the table width to a fixed value
   Setting the table width to a fixed value is the simplest and crudest method. In CSS, you can do this by setting the "width" property of the table. The advantage of this method is that it is simple and easy to understand, and has very good compatibility and is supported by almost all browsers. However, this method has a disadvantage, that is, if there is too much content in the table, the table width will not be enough.

For example, the following code can set the width of the table to 100 pixels:

table {
  width: 100px;
}

2. Set the table width as a percentage
   Another way to set the table width is In percentage terms. The width value set this way is determined relative to the width of the containing parent container. For example, if you set the table width to 100%, it will be equal to the width of the parent container.

Compared with setting a fixed width, using the percentage method allows the table to automatically adapt to devices of different sizes. The disadvantage is that the layout of the table may change on different devices because percentages are relative, not absolute.

For example, the following code can set the width of the table to 100%:

table {
  width: 100%;
}

3. Set the table layout method
   As mentioned above, use the percentage method to set the table width The table may change on different devices. Table layout can solve this problem. In CSS, there are two layout methods to choose from: fixed layout and automatic layout.

Fixed layout (fixed layout) means that when the "table-layout" attribute of the table is set to "fixed", the browser will calculate the cells based on the sum of the widths of all columns in the table. width. Once the cell width is determined, the table will use this width to draw all cells. This method can avoid the problem of insufficient width of the table, but if there are long cells in the table or too much text content in the cells, the cells may be deformed.

The following is the code for the fixed layout:

table {
  table-layout: fixed;
}

Auto layout (auto layout) means that when the column width is not set in the table, the browser will dynamically calculate the cells based on the content in the column. width. In other words, when the content in the cell exceeds the width of the cell, the table will automatically expand the width. This layout method is suitable for situations where the text content in the table is long or the content in the cells changes frequently, but the problem of insufficient width often occurs.

The following is the code for automatic layout:

table {
  table-layout: auto;
}

4. Using new features of CSS3
   In CSS3, a new attribute called "min-width" is added. This property can set the minimum width of the table. When the content in the table exceeds the minimum width, the table will automatically expand the width.

The following is the code using the "min-width" attribute:

table {
  min-width: 200px;
}

Summary
The above are some methods of setting the table width. Usually, we need to decide which method to use based on the actual situation. If you need the table to adapt to the device size, using a percentage width may be a good choice; if you need to avoid insufficient table width, you can use a fixed layout. Of course, according to different usage scenarios, we can also use these methods comprehensively to meet needs.

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