[ADD] col component

front/components/col.tsx

@@ -0,0 +1,20 @@
+import React, {Component} from 'react';
+import {StyleSheet, View} from 'react-native';
+ 
+export default class Col extends Component{
+  render() {
+    let customStyles = Object.assign({}, this.props.customStyles, styles.container);
+    return (
+      <View style={customStyles}>
+      {this.props.children}
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  container: {
+      marginLeft: 5,
+      marginRight: 5,
+  }
+});