import android.support.design.widget.Snackbar;中的design标红

Question

我已经导入了    
     implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    implementation'com.google.code.findbugs:jsr305:3.0.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
    implementation 'androidx.annotation:annotation:+'
    implementation 'com.android.support:design:28.2.0'
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:cardview-v7:28.0.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:support-annotations:28.0.0'
    implementation 'com.android.support:support-annotations:28.0.0'
都没有错，但是这个design就是一直标红，

Answer 1

androidx和support混合用？