What are the 5 ways to clear floats?

The five ways to clear floats are: 1. Use the clear attribute; 2. Use the overflow attribute; 3. Use the pseudo element clearfix; 4. Use flex layout; 5. Use grid layout. Detailed introduction: 1. Use the clear attribute, which is the most commonly used method to clear floats. You can add an element after the floating element and add the "clear: both;" style to it; 2. Use the overflow attribute to set the parent element Set "overflow: auto;" and so on.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

In CSS, there are five main ways to clear floats, which are:

1. Use the clear attribute: This is the most commonly used method to clear floats. You can add an element after the floated element and add clear: both; style to it. This element can be an actual DOM element, or it can be an invisible element, such as

. The disadvantage of this approach is that it requires adding extra elements to your HTML, which may affect your layout and the readability of your code.

2. Use the overflow attribute: You can set overflow: auto; or overflow: hidden; for the parent element. This way, when an element is floated, it triggers the BFC (Block Formatting Context), which prevents the float from affecting its parent element. The advantage of this approach is that it does not require adding additional elements to the HTML, but the disadvantage is that it may affect other styles (such as the rendering of backgrounds and borders).

3. Use pseudo elements clearfix: Pseudo elements are elements created in CSS that do not require adding additional elements to HTML. You can use the ::after or ::before pseudo-element to clear floats. The following is a basic example:

.clearfix::after {  
    content: "";  
    display: table;  
    clear: both;  
}

When using this method, you only need to add the clearfix class to the parent element that needs to be cleared of floating. The advantage of this approach is that it does not require adding additional elements to the HTML, but the disadvantage is that it may affect other styles (such as the rendering of backgrounds and borders).

4. Use flex layout: Flex layout is a modern CSS layout method that can automatically handle the arrangement and alignment of elements. You can set the parent element to flex layout, so that even if the elements in it are floated, the size of the parent element will not be affected. For example:

.parent {  
    display: flex;  
}

When using this method, you don't need to add extra elements to the HTML, nor do you need to use any tricks to clear floats. But it should be noted that not all browsers support flex layout.

5. Use grid layout: Grid layout is another modern CSS layout method that can create complex two-dimensional layouts. Like flex layout, you can set the parent element to grid layout, so that even if the elements are floated, the size of the parent element will not be affected. For example:

.parent {  
    display: grid;  
}

When using this method, you don't need to add extra elements to the HTML, nor do you need to use any tricks to clear floats. But it should be noted that not all browsers support grid layout. Moreover, grid layout is more complex than flex layout, and the control of layout is also more refined.

The above are the five main methods of clearing floats. Each method has its advantages and disadvantages, and you can choose the most appropriate method based on your specific needs and environment.

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