ncb-datepicker/src/datepicker.css

A datepicker with no dependencies. Check out a simple demo here: https://nickbittar.github.io/Datepicker/

.ncb-datepicker-container {
	position: absolute;
}
.ncb-datepicker-container:focus {
	outline: none;
}

.calendar {
	cursor: default;
	user-select: none;
	
	display: flex;
	flex-direction: column;
	
	box-sizing: border-box;
	width: 240px;
	
	padding: 4px 8px 8px 8px;
	border: 1px solid #ccc;
	box-shadow: 0px 1px 2px rgba(0,0,0,0.1);
	background: #fff;
	border-radius: 5px;
}

.ncb-datepicker-container  .calendar-header {
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	align-items: center;
	height: 50px;
	margin-bottom: 2px;
}
.ncb-datepicker-container .calendar-header > .calendar-header-label {
	display: flex;
	text-align: center;
	justify-content: center;
	margin: 2px 0px;
	padding: 5px 10px;
	font-weight: bold;
}

.ncb-datepicker-container .calendar-header > .calendar-header-control {
	cursor: pointer;
	border-radius: 5px;
	font-size: 1.2em;
}
.ncb-datepicker-container .calendar-header > .calendar-header-control:hover {
	background: #eee;
}
.ncb-datepicker-container .calendar-header > .current-month-name {
	font-size: 1em;
}
.ncb-datepicker-container .calendar-header > .current-year-name {
	font-size: 1em;
}

.ncb-datepicker-container .calendar-body {
	display: flex;
	flex-direction: row;
	flex-flow: wrap;
	justify-content: center;
	
}
.ncb-datepicker-container .calendar-date {				
	display: flex;
	align-items: center;
	justify-content: center;
	
	width: 32px;
	width: calc(100%/7);
	height: 32px;
	
	
}
.ncb-datepicker-container .calendar-item.calendar-weekday-label {			
	display: flex;
	align-items: center;
	justify-content: center;
	
	width: 32px;
	width: calc(100%/7);
	font-size: 1.1em;
	border-bottom: 1px solid #ccc;
	height: initial;
	
	padding-bottom: 3px;
	margin-bottom: 4px;
	
}

.ncb-datepicker-container .calendar-option {
	cursor: pointer;
	/*border: 1px solid #fafafa;*/
	box-sizing: border-box;
}
.ncb-datepicker-container .calendar-option:hover {
	background: lavender;
	font-weight: bold;
}
.ncb-datepicker-container .calendar-item.calendar-item-disabled, .ncb-datepicker-container .calendar-today-button.calendar-today-button-disabled {
	cursor: not-allowed;
	color: #AAA;
	background: #eee;
	border-radius: 0px;
}
.ncb-datepicker-container .current-month {
	color: #111;
	border-radius: 3px;
}
.ncb-datepicker-container .not-current-month {
	color: #b3b3b3;
	background: #f5f5f5;
	border-radius: 0px;
}

.ncb-datepicker-container .calendar-month { 
	display: flex;
	align-items: center;
	justify-content: center;
	
	width: 74px;
	width: calc(100%/3);
	height: 56px;
}
.ncb-datepicker-container .calendar-year { 
	display: flex;
	align-items: center;
	justify-content: center;
	
	width: 74px;
	width: calc(100%/3);
	height: 56px;
}

.ncb-datepicker-container .calendar-footer {
	display: flex;
	justify-content: center;
	align-items: center;
	margin-top: 2px;
}
.ncb-datepicker-container .calendar-today-button {
	cursor: pointer;
	display: flex;
	justify-content: center;
	width: 100%;
	border-radius: 5px;
	font-weight: bold;
	padding: 6px 2px;
	font-size: 0.9em;
}
.ncb-datepicker-container .calendar-today-button:hover {
	background: #eee;
}

.ncb-datepicker-container.dark > .calendar {
	background: #111;
	color: #eee;
}
.ncb-datepicker-container.dark > .calendar .current-month {
	color: #eee;
}
.ncb-datepicker-container.dark > .calendar .not-current-month {
	color: #aaa;
	background: #333;
}
.ncb-datepicker-container.dark > .calendar .calendar-option:hover {
	color: #eee;
	background: #4b133a;
}
.ncb-datepicker-container.dark > .calendar .selected-date {
	color: #eee;
	background: #2c1fa1;
}
.ncb-datepicker-container.dark > .calendar .calendar-header > .calendar-header-control:hover {
	color: #eee;
	background: #444;
}
.ncb-datepicker-container.dark > .calendar .calendar-item.calendar-item-disabled {
	color: #999;
	background: #444;
}
.ncb-datepicker-container.dark > .calendar .calendar-today-button:hover {
	background: #444;
}

.ncb-datepicker-container.compact > .calendar {
	font-size: 0.75rem;
	width: 176px;
    padding: 2px 4px 2px 4px;

}
.ncb-datepicker-container.compact > .calendar .calendar-date {
	height: 24px;

}

.ncb-datepicker-container.compact > .calendar .calendar-month {
	height: 42px;

}
.ncb-datepicker-container.compact > .calendar .calendar-year {
	height: 42px;

}
.ncb-datepicker-container.compact > .calendar .calendar-header {
	height: 44px;

}