Here's checkboxfield default css (touch 2.2.1): `
.x-checkmark-base, .x-field-checkbox .x-field-mask::after, .x-field-radio .x-field-mask::after, .x-select-overlay .x-item-selected.x-list-item::after { position: absolute; top: 0; right: 10px; bottom: 0; content: '3'; font-family: 'Pictos'; font-size: 1.6em; text-align: right; line-height: 1.6em; }
`
you can change "right: 10px" to "left: 10px".
in my application, I put this css code in index.html
.x-checkmark-base, .x-field-checkbox .x-field-mask::after, .x-field-radio .x-field-mask::after, .x-select-overlay .x-item-selected.x-list-item::after { right:auto !important; left:10px !important; }
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