angular/components

bug(mat-toolbar): mat-toolbar styles for elements like h1, h2, ... are not taking precedence over mat-typography

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#26,261 创建于 2022年12月14日

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 (1 评论) (4 反应) (0 负责人)TypeScript (24,044 star) (6,650 fork)batch import
P3area: material/toolbargood first issue

描述

Is this a regression?

  • Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

When a header tag is used within mat-toolbar the stylings from the theme do not take precedence. The default styles from mat-typography are still used. Therefore the margin is not reset to 0 and the font-size also differs.

image

Reproduction

https://stackblitz.com/edit/components-issue-t1dkvg

Steps to reproduce:

  1. Apply mat-typography class to body
  2. Add h1 tag with text to mat-toolbar

Expected Behavior

Specific styles from mat-toolbar for these elements should take precedence. e.g. margin should be 0.

Actual Behavior

Default mat-typography styles are used even though mat-toolbar would specify more accurate ones.

Environment

  • Angular: 15.0.2
  • CDK/Material: 15.0.2
  • Browser(s): Edge
  • Operating System (e.g. Windows, macOS, Ubuntu): Windows

贡献者指南

技术栈
typescriptcsshtml
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Basic knowledge of Angular MaterialUnderstanding CSS specificity
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
60
研究方向
Examine the CSS specificity of mat toolbar styles (e.g., in toolbar theme.scss) compared to mat typography styles. Identify where the toolbar's h1, h2 selectors are overridden. Consider adjusting selector precedence or adding !important flags carefully. Review the reproduction link for exact behavior.