styles.css

/* ************************** */
/* Copyright Steven Mott 2016 */
/* ************************** */

body {
    margin: 40px 10px;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 14px;
}

.container {
    display: flex;
    z-index: 10;
}

#calendar {
    min-width: 250px;
    flex: 1 1 0;
    /*max-width: 900px;
    margin: 0 auto;*/
}

#agenda {
    flex: 2 2 0;
    height: 100%
}

.panelContent {
    display: flex;
    flex-direction: column;
    flex-grow: 4;
}

.panelContent > span {
    display: flex;
    margin: 4px 0px 4px 0px;
}

.panelContent > span > label {
    flex-grow: 1;
}

.panelContent > span > input {
    flex-grow: 2;
    max-width: 200px;
}

.panelContent > span > textarea {
    flex-grow: 2;
    max-width: 200px;
    resize: none;
}

.panelButtons {
    display: flex;
    flex-direction: row-reverse;
}

button {
    margin: 0px 4px 0px 4px;
    border-style: solid;
    border-width: 1px;
    border-color: gray;
    padding: 4px;
    background-color: ghostwhite;
}

button:hover {
    background-color: lightgray;
}

.appointmentPanel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    background-color: white;
    z-index: 20;
    display: none;
    width: 340px;
    flex-direction: column;
    padding: 24px;
}

.appointmentPanel-shown {
    display: flex;
}

.overlay {
    z-index: 15;
    background-color: gray;
    opacity: 0.5;
    display: none;
}

.fullScreen {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}

.overlay-shown {
    display: block;
}