body {
    font-family: 'Raleway', sans-serif;
}

body, html {
    height: 100%;
    margin: 0;
}
  
.center-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100%;
}

.centered-div {
    text-align: left;
    min-width: 500px;
    max-width: 600px;
}

.centered-div h1 {
    text-align: center;
}

.correct {
    background-color: yellowgreen
}