Angular material Could not find Angular Material core theme

Solution 1:

Please insert below code into your styles.css which is located in your src folder.

@import "../node_modules/@angular/material/prebuilt-themes/deeppurple-amber.css";

You can select any css under the prebuilt-themes folder.

put that code into your angular-cli.json file

"styles": [
    "../node_modules/@angular/material/prebuilt-themes/deeppurple-amber.css"
  ],

it's works fine for me