* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: Tahoma, Arial, Helvetica, sans-serif;
}
.container {
    /* width: 70%; */
    width: 70%;
    margin: 20px auto;
    background-color: #f8f8f8;
    padding: 15px
}
.quiz-app .quiz-info {
    display: flex;
    background-color: white;
    justify-content: space-between;
    padding: 20px;
}
.quiz-app .quiz-area {
    background-color: white;
    padding: 20px;
    margin-top: 20px;
}
.quiz-app .quiz-area h2 {
    margin: 0;
}
.quiz-app .answers-area {
    background-color: white;
    padding: 0 20px 20px;
}
.quiz-app .answers-area .answer {
    background-color: #f9f9f9;
    padding: 15px;
}
.quiz-app .answers-area .answer:not(:last-child) {
    border-bottom:  1px solid #dfdfdf;
}
.quiz-app .answers-area .answer input[type="Radio"]:checked + label {
    color: #0075ff;
}
.quiz-app .answers-area .answer label {
    cursor: pointer;
    font-weight: bold;
    color: #777;
    font-size: 14px;
    margin-left: 5px;
    position: relative;
    top: -1px;
}
.quiz-app .submit-button {
    background-color: #0075ff;
    display: block;
    width: 100%;
    padding: 15px;
    border:  none;
    color: #fff;
    font-weight: bold;
    font-size: 18px;
    cursor: pointer;
    border-radius: 6px;
    margin: 20px auto;

}
.quiz-app .submit-button:focus {
    outline: none;
}
.quiz-app .bullets {
    border-top: 1px solid #dfdfdf;
    background-color: #fff;
    display: flex;
    padding: 20px;
}
.quiz-app .bullets .spans {
    flex: 1;
    display: flex;
}
.quiz-app .bullets .spans span {
    width: 20px;
    height: 20px;
    background-color: #ddd;
    margin-right: 5px;
    border-radius: 50%;
}
.quiz-app .bullets .spans span.on {
    background-color: #0075ff;

}
.quiz-app .results {
    margin-top: 20px;
    text-align: center;
    background-color: white;
    padding: 20px;
    display: none;
}
.quiz-app .results span {
    font-weight: bold;
}
.quiz-app .results span.bad {
    color: #dc0a0a;
}
.quiz-app .results span.good {
    color: #009688;
}
.quiz-app .results span.perfect {
    color: #0075ff;
}

/* small screen */
@media (max-width: 768px) {
    .container {
        width: 100%;
        margin: 0 auto;
    }
    .quiz-area h2 {
        font-size: 18px;
    }
    .answers-area {
        font-size: 15px;
    }
    .quiz-app .submit-button {
        font-size: 16px;
        
    }
    .bullets {
        display: flex;
        flex-direction: column;
    }
    .bullets .spans span {
        width: 15px;
        height: 15px;
    }
    .bullets .countdown {
        padding: 20px;
        text-align: center;
        font-size: 20px;
    }
}