body {
    margin: 0;
    height: 100vh;
    display: flex;
    flex-flow: column;
}
#app {
    margin: 5px;
    display: flex;
    flex: 1;
    flex-flow: column;
}
#menu {
    display: flex;
    flex-flow: row;
}
#menu span {
    background-color: lightgray;
    padding: 0 5px;
    cursor: pointer;
    border: solid black 1px;
    border-left-width: 0;
}
#menu span:hover {
    background-color: white;
}
#menu span.active {
    background-color: white;
    border-bottom-width: 0;
}
#menu span:first-of-type {
    border-top-width: 0;
    cursor: default;
    background-color: white;
}
#menu span:last-of-type {
    border-top-width: 0;
    border-right-width: 0;
    cursor: default;
    background-color: white;
    flex: 1;
}
#body {
    border: solid black 1px;
    border-top-width: 0;
    flex: 1;
    display: flex;
    flex-flow: column;
}
#body div {
    flex: 1;
}

#home {
    padding: 10px 10px 0 10px;
}
.blog {
    margin-bottom: 10px;
    border: solid black 1px;
}
.blog .title {
    font-size: large;
    background-color: lightgray;
    padding-left: 5px;
}
.blog .body {
    margin-left: 5px;
    white-space: pre;
}