To modify/add CSS affecting your customization options, see the CSS template below which you would be inserted into the file snippets/shopstorm-apps.scss.liquid:
/* Single Line Text Options */
.product-customizer-options .product-customizer-option.option-type-text input{}
/* Dropdown Options */
.product-customizer-options .product-customizer-option.option-type-select select{
-moz-appearance: none;
-webkit-appearance: none;
appearance: none;
}
/* Paragraph Text Options */
.product-customizer-options .product-customizer-option.option-type-multiline textarea{}/* File Upload Options */
.product-customizer-options .product-customizer-option.option-type-file input{}/* Single Checkbox Options */
.product-customizer-options .product-customizer-option.option-type-checkbox input{
vertical-align: middle;
height: auto;
}
/* Checkbox Group Options */
.product-customizer-options .product-customizer-option.option-type-checkbox_group input{
vertical-align: middle;
height: auto;
}
/* Radio Options */
.product-customizer-options .product-customizer-option.option-type-radio input{
vertical-align: middle;
height: auto;
}
/* Options main label */
.product-customizer-options .product-customizer-option > label{
display: inline-block;
}
/* Checkbox/Radio buttons individual labels */
.product-customizer-options .product-customizer-option.option-type-radio ul li label,
.product-customizer-options .product-customizer-option.option-type-checkbox_group ul li label{
vertical-align: middle;
position: unset;
top: 0px;
left: 0px;
}
/* Each individual option */
.product-customizer-options .product-customizer-option{
}