MathsCalc / app / src / main / res / drawable / shape_white_trans_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <corners android:radius="360dp" />
    <solid android:color="#22ffffff" />
    <stroke android:color="#55ffffff" android:width="0.2dp" />
</shape>