Missing attribute `type` in the css <link> tags

[ValentinMATHIEU]

Q	A
php-code-coverage version	4.0.4
PHP version	7.0 / 7.1
Driver	Xdebug
Xdebug version (if used)	2.5.5
Installation Method	Composer
Usage Method	PHPUnit
PHPUnit version (if used)	x.y.z

When i generate the HTML code coverage report, the css tags have missing attribute type.

<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">

This may cause display issue: no CSS, and some error messages about wrong mime types.
In my case Google Chrome cry about mime types and doesn't run CSS.

After adding type="text/css" no more errors. ref: w3schools

<link href="css/bootstrap.min.css" rel="stylesheet" type="text/css">
<link href="css/style.css" rel="stylesheet" type="text/css">

[ValentinMATHIEU]

I have a local branch named issue-540, ready to fix this in 12 different files.

[garrettw]

I recommend closing this issue and opening a PR with your fix.