.HolyGrail {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
}
header {
    flex: 1;
    background-color: #d0d9de;
    height: 198px;
    background-image: url(/eportal/uiFramework/commonResource/image/2021092810402122080.jpg);
}
.HolyGrail-body {
    display: flex;
    flex: 1;
    padding-top: 5vh;
    padding-bottom: 5vh;
}
.HolyGrail-content {
    flex: 1;
    padding-left: 100px;
    padding-right: 100px;
}
footer {
    flex: 1;
    background-color: #d0d9de;
    height: 160px;
}