:root {
    --blue: #044aa8;
    --red: #f31020; 
    --grey: #f7f7f7;
    --white: #ffffff;
}
*,*::before, *::after {
    box-sizing: border-box;
}
body {
    margin: 0px;
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    min-height: 100%;
    background: var(--white);
}

header {
    background: var(--grey);
    box-shadow: 0px 1px 4px 0px #d3d3d3;;
}

main {
    flex-grow: 1;
}

footer {
    display: flex;
    
}
footer div {
    background: var(--blue);
    border: 1px solid var(--white);
    flex: 1;
    padding: 20px;
    text-align: center;
    color: var(--white);
}

@media screen and (max-width: 580px) and (min-width: 0px) {

}
@media screen and (min-width: 650px) and (min-height: 0px) and (max-height: 750px) {

}