如何将文本更改为白色？

Question

这是我的HTML代码，我想将文本“ GIMME YOUR NAME”更改为白色。

我需要使用什么CSS选择器来更改此文本颜色。

class

这是我尝试过的

struct travelInfo
{
    double miles, liters;

    double mpg() const;
    void getUserInput(const string &prompt);
    void displayResult(const string &name) const;
};

void userInstruction(travelInfo &car1, travelInfo &car2);
void displayResult(const travelInfo &car1, const travelInfo &car2);

int main()
{
    travelInfo car1, car2;
    char keepGoing;

    do
    {
        userInstruction(car1, car2);
        displayResult(car1, car2);

        //Allows for repeating
        cout << "Do you wish to keep going? (y/n)  \n";
        cin >> keepGoing;
    }
    while (keepGoing == 'y' || keepGoing == 'Y');

    system("pause");
    return 0;
}

static const double LPG = 0.264179;
double travelInfo::mpg() const
{
    return miles / (liters * LPG);
}

void travelInfo::getUserInput(const string &prompt)
{
    cout << prompt << " \n" << endl;
    cin >> liters;
    cin >> miles;
}

void travelInfo::displayResult(const string &name) const
{
    cout << name << " used: " << liters << " liters of fuel \n";
    cout << name << " drove: " << miles << " miles \n";
    cout << name << " gets: " << mpg() << " miles per gallon \n";
}

void userInstruction(travelInfo &car1, travelInfo &car2)
{
    car1.getUserInput("Please enter the liters of gasoline consumed as well as the miles travelled for Car 1.");
    cout << endl << endl;
    car2.getUserInput("Do the same for Car 2.");
}

void displayResult(const travelInfo &car1, const travelInfo &car2)
{
    double mpg1 = car1.mpg(), mpg2 = car2.mpg();

    car1.displayResult("Car 1");
    cout << endl;

    car2.displayResult("Car 2");
    cout << endl;

    if (mpg1 == mpg2)
    {
        cout << "Both cars have the same fuel efficiency. \n" << endl;
    }
    else if (mpg1 > mpg2)
    {
        cout << "Car 1 has better fuel efficiency. \n" << endl;
    }
    else
    {
        cout << "Car 2 has better fuel efficency. \n" << endl;
    }
}

Answer 1

它不是.input而是input，因为点选择器.选择类而不是元素。

所以您的代码如下：

input[type=text]{
color:white}