* {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
        Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans",
        "Droid Sans", "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: #fff;
    margin: 0;
}

.navtop {
    background-color: #3b4656;
    min-height: 60px;
    width: 100%;
}

.navtop div {
    display: flex;
    align-items: center;
    gap: 10px;
    width: min(100% - 30px, 1100px);
    min-height: 60px;
    margin: 0 auto;
}

.navtop div h1 {
    flex: 1;
    margin: 0;
    color: #ebedee;
    font-size: 24px;
    font-weight: normal;
}

.navtop div a {
    padding: 10px;
    color: #c4c8cc;
    text-decoration: none;
    font-weight: bold;
}

.navtop div a:hover {
    color: #ebedee;
}

.content {
    width: min(100% - 30px, 1100px);
    margin: 0 auto;
}

.content h2 {
    margin: 0;
    padding: 25px 0;
    color: #666;
    font-size: 22px;
    border-bottom: 1px solid #ebebeb;
}

.month {
    text-align: center;
}