.error404 {
    color: whitesmoke;
    font-weight: bolder;
    font-size: 20rem;
}

.error404-message {
    color: whitesmoke;
}

.column404 {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-top: 10%;
    padding-bottom: 10%;
}

@media only screen and (max-width: 450px) and (min-width: 370px) { 
    .error404 {
        font-size: 15rem;
    }

    .column404 {
        padding-top: 15%;
    }
}

@media only screen and (max-width: 370px) { 
    .error404 {
        font-weight: bold;
        font-size: 10rem;
    }

    .column404 {
        padding-top: 15%;
    }
}