fragment_settings.xml

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

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="You can change the duration of time between consecutive messages"
        android:textSize="20sp"
        android:textAppearance="@style/TextAppearance.AppCompat.Body1"
        android:textAlignment="center"
        android:layout_marginTop="50dp"
        android:textStyle="italic"/>

    <View
        android:layout_width="match_parent"
        android:layout_height="4dp"
        android:layout_alignParentStart="true"
        android:background="@color/colorAccent"
        android:layout_alignParentTop="true"

        android:layout_marginTop="120dp"
        android:orientation="horizontal"
        android:layout_alignParentLeft="true"

        android:padding="8dp"
        />

    <EditText
        android:id="@+id/time"
        android:layout_width="160dp"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"

        android:layout_alignParentRight="true"

        android:layout_centerHorizontal="true"
        android:layout_marginTop="240dp"
        android:layout_marginEnd="127dp"
        android:layout_marginRight="127dp"
        android:text="30 seconds"
        android:textAlignment="center" />

    <Button
        android:id="@+id/change_time"
        android:layout_width="160dp"
        android:layout_height="wrap_content"
        android:layout_below="@+id/time"
        android:layout_alignLeft="@id/time"
        android:layout_marginLeft="0dp"
        android:layout_marginTop="50dp"
        android:background="@drawable/rounded_buttons"
        android:text="CHANGE TIME"
        android:textAlignment="center"
        android:textStyle="italic" />
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="301dp"
        android:layout_marginTop="65dp"
        android:src="@drawable/clock_img"
        android:layout_below="@+id/change_time"/>
    <View
        android:layout_width="match_parent"
        android:layout_height="2dp"
        android:layout_alignParentBottom="true"
        android:background="@color/colorAccent"/>

</RelativeLayout>