将角度材料更新到版本 6 后，所有标题元素 (h1-h6) 都没有获得正确的字体系列和字体大小。
这是我的自定义配置：
$custom-typography: mat-typography-config(
$font-family: 'Roboto, sans-serif',
// Large, one-off headers, usually at the top of the page.
$display-4: mat-typography-level(112px, 112px, 300),
$display-3: mat-typography-level(56px, 56px, 400),
$display-2: mat-typography-level(45px, 48px, 400),
$display-1: mat-typography-level(34px, 40px, 400),
// h1
$headline: mat-typography-level(24px, 32px, 400),
// h2
$title: mat-typography-level(20px, 32px, 500),
// h3
$subheading-2: mat-typography-level(16px, 28px, 400),
// h4
$subheading-1: mat-typography-level(15px, 24px, 400),
// Bolder body text.
$body-2: mat-typography-level(14px, 24px, 500),
// Base body text.
$body-1: mat-typography-level(18px, 20px, 400),
// Smaller body and hint text.
$caption: mat-typography-level(12px, 20px, 400),
// Buttons and anchors.
$button: mat-typography-level(18px, 14px, 300),
// Line-height must be unit-less fraction of the font-size.
$input: mat-typography-level(18px, 1.2, 300)
);
@include mat-core($custom-typography);