body {
    padding: 0;
    margin: 0;
}

* {
    box-sizing: border-box;
}

#page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    flex-shrink: 0;
    background-color: rgb(255, 70, 74);
    color: #fff;
    padding: 20px;
}
main {
    flex-grow: 1;
    padding: 20px;
}
footer {
    flex-shrink: 0;
    background-color: rgb(75, 70, 74);
    color: #fff;
    padding: 20px;
}