body {
    font-family: 'Roboto', sans-serif;
    padding: 0;
    margin: 0;
    -webkit-box-sizing: border-box;
       -moz-box-sizing: border-box;
            box-sizing: border-box;
}
.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 40px 20px;
    background-color: whitesmoke;
    justify-content: center;
}
header {
    padding: 0 0 30px 0;
    font-size: 30px;
}

.simulator {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 50vh;
}

.simulator__input {
    width: 100%;
    height: 40px;
    box-shadow: 0 0 10px rgba(0,0,0,.2);
}

.simulator__header {
    font-size: 4em;
    text-align: center;
}

.simulator__time {
    font-size: 1.5em;
    text-align: center;
}

.correct {
    width: min-content;
    height: min-content;
    background-color: green;
    padding: 5px 10px;
    margin: 2px;
}

.incorrect {
    width: min-content;
    height: min-content;
    background-color: red;
    padding: 5px 10px;
    margin: 2px;
}

.simulator__done {
    height: 5vh;
    width: 100%;
    flex-wrap: wrap;
    display: flex;
}