Sublime text 3 key bindings

gistfile1.txt

[{
        "keys": ["super+alt+left"],
        "command": "set_layout",
        "args": {
            "cols": [0.0, 0.33, 1.0],
            "rows": [0.0, 1.0],
            "cells": [
                [0, 0, 1, 1],
                [1, 0, 2, 1]
            ]
        }
    },

    {
        "keys": ["super+alt+right"],
        "command": "set_layout",
        "args": {
            "cols": [0.0, 0.66, 1.0],
            "rows": [0.0, 1.0],
            "cells": [
                [0, 0, 1, 1],
                [1, 0, 2, 1]
            ]
        }
    },

    {
        "keys": ["super+alt+shift+up"],
        "command": "set_layout",
        "args": {
            "cols": [0.0, 1.0],
            "rows": [0.0, 0.33, 1.0],
            "cells": [
                [0, 0, 1, 1],
                [0, 1, 1, 2]
            ]
        }
    },

    {
        "keys": ["super+alt+shift+down"],
        "command": "set_layout",
        "args": {
            "cols": [0.0, 1.0],
            "rows": [0.0, 0.66, 1.0],
            "cells": [
                [0, 0, 1, 1],
                [0, 1, 1, 2]
            ]
        }
    },

    {
        "keys": ["super+."],
        "command": "htmlprettify"
    },

    {
        "keys": ["super+,"],
        "command": "sass_beautify",
        "content": [{
            "key": "selector",
            "operator": "equal",
            "operand": "source.scss"
            }]
    }
]