Why underline the float property?

Question

css

After adding any value to the float property, the property in the file is underlined, while the gallp continues to work and the property is applied

Answer 1

underlines because inline-block and float should not go together

inline-block is ignored due to the float. If 'float' has a value other than 'none', the box is floated and 'display' is treated as 'block'scss(propertyIgnoredDueToDisplay)