JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<div class="responsive-calendar">
    <div class="controls">
        <img src="images/left_16.png" />
        <?php echo date("M d, Y", mktime(0,0,0,$cMonth,$cDay,$cYear)); ?>
        <img src="images/right_16.png" />
        <a style="padding-left:15px;">Today</a>
        <a style="padding-left:15px;">Monthly View</a>
    </div>
    <div class="day-headers">
        <div class="hour header"><strong>Times</strong></div>
        <div class="appt header"><strong>Appointments</strong></div>
    </div>
    <div class="timeslots">
        <div class="timeslot">
            <div class="timesection hour">10:00am</div>
            <div class="timesection appt">Test 1</div>
        </div>
        <div class="timeslot">
            <div class="timesection hour">11:00am</div>
            <div class="timesection appt">Test 2</div>
            <div class="timesection appt">Test 3</div>
        </div>
        <div class="timeslot">
            <div class="timesection hour">12:00pm</div>
            <div class="appts">
                <div class="timesection appt">Hack Result 1</div>
            </div>
        </div>
        <div class="timeslot">
            <div class="timesection hour" style="widht:10%">12:00pm</div>
            <div class="appts">
                <div class="timesection appt">Hack Result 2</div>
                <div class="timesection appt">Hack Result 3</div>
            </div>
        </div>
    </div>
</div>

CSS

.responsive-calendar .controls {
	color: #666;
	font-weight: normal;
	font-size: 18px;
	font-family: "Open Sans",Arial,Verdana,sans-serif;
	text-align: left;
}

.responsive-calendar .controls a {
	cursor: pointer;
}

.responsive-calendar .controls h4 {
	display: inline;
}

.responsive-calendar .day-headers, .responsive-calendar .days, .responsive-calendar .timeslots {
	font-size: 0;
}

.responsive-calendar .header {
	background-color: #f3f2f2 !important;
	box-shadow: 0px 1px 0px 0px rgb(255, 255, 255) inset;
	color: rgb(102, 102, 102);
	font-size: 13px;
	line-height: 18px;
	padding: 10px 0px;
	font-weight: bold;
	cursor:default !important;
}

/* Daily Planner CSS */
.responsive-calendar .timeslot {
	height:auto;
	display:flex;
	display:-webkit-flex;
	flex-flow: row column;
	-webkit-flex-flow: row column;
}

.responsive-calendar .hour {
	display: inline-block;
	position: relative;
	font-size: 10px;
	border:1px solid rgb(221, 221, 221);
	width: 10%;
	text-align: center;
	flex: 1 1 100%;
	-webkit-flex:1 1 100%;
}

.responsive-calendar .appts {
	height:auto;
	display:flex;
	display:-webkit-flex;
	width: 900%;
	flex-flow: row column;
	-webkit-flex-flow: row column;
}

.responsive-calendar .appt {
	background-color:#CCC;
	display: inline-block;
	position: relative;
	font-size: 10px;
	border:1px solid rgb(221, 221, 221);
	width: 90%;
	text-align: center;
	flex: 1 1 100%;
	-webkit-flex:1 1 100%;
}

.responsive-calendar .appt a {
	color: #000000;
	display: block;
	cursor: pointer;
	padding: 5% 0 5% 0;
}

.responsive-calendar .timesection {
	display: inline-block;
	position: relative;
	font-size: 10px;
	border:1px solid rgb(221, 221, 221);
	text-align: center;
	flex: 1 1 100%;
	-webkit-flex:1 1 100%;
}

.responsive-calendar .timesection:hover {
	background-color: rgb(227, 235, 253);
	cursor: pointer;
	text-decoration: none;
}

.responsive-calendar .timesection a {
	color: #000000;
	display: block;
	cursor: pointer;
	padding: 3% 0 3% 0;
}

.responsive-calendar .timesection...