else if(value.length === 2) value = [value[0], value[1], value[0], value[1], value[0], value[1], value[0], value[1]];
    else if(value.length === 4) value = [value[0], value[1], value[2], value[3], value[0], value[1], value[2], value[3]];
    else if(value.length === 6) value = [value[0], value[1], value[2], value[3], value[4], value[5], value[2], value[3]];
    else if(value.length !== 8) throw new TypeError('Invalid borderRadius value.');