body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}
.header {
    padding: 10px;
    text-align: center;
}
.header img {
    width: 100px;
}
@media screen and (min-width: 1100px) {
    .header img {
        width: 140px;
    }
}
.main {
    padding: 10px;
    text-align: center;
    font-size: 1.25em;
    line-height: 1.5;
}
@media screen and (min-width: 1100px) {
    .main {
        font-size: 1.5em;        
    }
}