How to fix? – Shopify Community

@Spay,  You can try: 

Step 1: Go to Shopify Admin -> Online Store ->Theme -> Edit code

Step 2: Search file theme.liquid

Step 3: Insert this code above </head> tag:

<style>
.prvw_block .block__cb input:checked + label {
    border: 2px solid #15f0ed !important;
    background-color: #eaffff !important;
}

.prvw_block .block__cb input + label {
    border: 2px solid #cff3f3;
    border-radius: 15px;
}
</style>

Hope this can help you,

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