Как изменить высоту двух элементов чтобы общая сумма значений высоты оставалась неизменной?
<!DOCTYPE html>
<html lang="ru">
<head>
<meta charset="utf-8">
<title></title>
<style>
body { width: 760px; }
body, select, input { font: 14px serif; }
#calendar { width: 330px; height: 375px; display: inline-block; border: 1px solid #a9a9a9; border-radius: 6px/4px; padding: 5px; }
#navigation_panel { background: hsl(207, 100%, 92%); min-height: 34px; max-height: 78px; border: 1px solid #a9a9a9; border-radius: 6px/4px; padding: 10px; margin-bottom: 8px; text-align: center; vertical-align: middle; display: -webkit-box; display: -webkit-flex; display: flex; -webkit-box-align: center; -webkit-align-items: center; align-items: center; -webkit-box-pack: center; -webkit-justify-content: center; justify-content: center; -webkit-flex-wrap: wrap; flex-wrap: wrap; }
#navigation_panel button, #navigation_panel #calendar_year { background: hsl(207, 100%, 85%); color: hsl(207, 100%, 35%); font: 14px serif; border: 1px solid hsl(207, 100%, 35%); }
#calendar_month { background: transparent; color: hsl(207, 100%, 35%); font: 14px serif; border: 1px solid hsl(207, 100%, 35%); }
#navigation_panel button { height: 34px; vertical-align: middle; }
#background_month { background: hsl(207, 100%, 85%); display: inline-block; }
button.minus { width: 28px; text-align: center; border-radius: 12px 0 0 12px / 10px 0 0 10px; margin-right: -1px; }
button.plus { width: 28px; text-align: center; border-radius: 0 12px 12px 0 / 0 10px 10px 0; margin-left: -1px; }
.month_plus { margin-right: 35px; }
#presently { width: 288px; margin-top: 10px; border-radius: 12px/10px; -webkit-box-flex: 0; -webkit-flex: 0 0 288px; flex: 0 0 288px; }
#calendar_month { width: 89px; display: inline-block; }
#calendar_year { width: 54px; display: inline-block; }
select { height: 34px; }
input { height: 30px; border: 1px solid #a9a9a9; display: inline-block; text-align: center; }
#table { font: sans-serif; width: 100%; height: 311px; padding: 2px; }
#table, td { border: 1px solid #a9a9a9; border-radius: 6px/4px; }
td { margin: 1px; padding: 5px; text-align: center; }
.prevMonth { opacity: 0.5; }
.curMonth { background: #ff69b4; }
.nextMonth { opacity: 0.4; }
.nextMonth:nth-child(n + 6) { background: #ffebf5; }
.curDay { background: #fffacd; }
#presently.hide { display: none; }
.week-day { background: #c2d6ff; color: #0069ff; }
.week-day.curDay { border: 1px solid #285fcd; background: #6b9cff; color: #e6f5ff; font-weight: bold; }
.week-day:nth-child(n + 6) { background: #ffcae3; color: #ff0075; }
.week-day.curDay:nth-child(n + 6) { border: 1px solid #ff0075; background: #ff97c8; color: #fff8fc; text-shadow: 1px 1px #ff0075, 1px -1px #ff0075, -1px 1px #ff0075, -1px -1px #ff0075, 1px 0 #ff0075, -1px 0 #ff0075, 0 1px #ff0075, 0 -1px #ff0075; }
#table tbody td { background: #def1ff; color: #0091ff; }
#table tbody td:nth-child(n + 6) { background: #ffdced; color: #ff0075; }
#table tbody td.curMonth.curDay { background: #c2d6ff; border: 1px solid hsl(207, 100%, 35%); font-weight: bold; color: #fff; text-shadow: 1px 1px hsl(207, 100%, 35%), -1px 1px hsl(207, 100%, 35%), 1px -1px hsl(207, 100%, 35%), -1px -1px hsl(207, 100%, 35%), 1px 0 hsl(207, 100%, 35%), 0 1px hsl(207, 100%, 35%), -1px 0 hsl(207, 100%, 35%), 0 -1px hsl(207, 100%, 35%); }
#table tbody td.curMonth.curDay:nth-child(n + 6) { background: #ffbadb; border: 1px solid #ff0075; text-shadow: 1px 1px #ff0075, 1px -1px #ff0075, -1px 1px #ff0075, -1px -1px #ff0075, 1px 0 #ff0075, -1px 0 #ff0075, 0 1px #ff0075, 0 -1px #ff0075; }
</style>
</head>
<body>
<div id="calendar">
<div id="navigation_panel">
<button class="month_minus minus">‹</button>
<span id="background_month"><select id="calendar_month"></select></span>
<button class="month_plus plus">›</button>
<button class="year_minus minus">‹</button>
<input type="text" size="4" id="calendar_year" />
<button class="year_plus plus">›</button><br />
<button id="presently">сегодня</button>
</div>
<table id="table">
<thead>
<tr>
<td class="week-day">Пн.</td>
<td class="week-day">Вт.</td>
<td class="week-day">Ср.</td>
<td class="week-day">Чт.</td>
<td class="week-day">Пт.</td>
<td class="week-day">Сб.</td>
<td class="week-day">Вс.</td>
</tr>
</thead>
<tbody></tbody>
</table>
<script>
Date.prototype.reduce = function(callback, value) {
var year = this.getFullYear();
var month = this.getMonth();
var step = new Date(year, month, 1);
var last = new Date(year, month + 1, 0);
step.setHours(24 * (0 - ((step.getDay() + 6) % 7)));
last.setHours(24 * (6 - ((last.getDay() + 6) % 7)));
for (var i = 0; step <= last; i++) {
value = callback(value, new Date(+step), i, this);
step.setHours(24);
}
return value;
};
var data = new Date();
var selectMonth = document.querySelector('#calendar_month');
var monthNames = [
'Январь',
'Февраль',
'Март',
'Апрель',
'Май',
'Июнь',
'Июль',
'Август',
'Сентябрь',
'Октябрь',
'Ноябрь',
'Декабрь',
];
monthNames.forEach(function(monthName, i) {
selectMonth.options[i] = new Option(monthName, i);
});
selectMonth.addEventListener('change', function() {
data.setMonth(this.value);
createCalendar(data);
});
var minusMonth = document.querySelector('.month_minus');
minusMonth.addEventListener('click', function() {
data.setMonth(data.getMonth() - 1);
createCalendar(data);
});
var plusMonth = document.querySelector('.month_plus');
plusMonth.addEventListener('click', function() {
data.setMonth(data.getMonth() + 1);
createCalendar(data);
});
var minusYear = document.querySelector('.year_minus');
minusYear.addEventListener('click', function() {
data.setYear(data.getFullYear() - 1);
createCalendar(data);
});
var plusYear = document.querySelector('.year_plus');
plusYear.addEventListener('click', function() {
data.setYear(data.getFullYear() + 1);
createCalendar(data);
});
var inputYear = document.querySelector('#calendar_year');
inputYear.addEventListener('input', function() {
if (/^d{4}$/.test(this.value)) {
data.setYear(this.value);
createCalendar(data);
}
});
var currentButton = document.querySelector('#presently');
currentButton.addEventListener('click', function() {
data = new Date();
createCalendar(data);
});
var daysTd = document.querySelectorAll('.week-day');
function createCalendar(data) {
var now = new Date().setHours(0, 0, 0, 0);
var year = data.getFullYear();
inputYear.value = year;
var month = data.getMonth();
selectMonth.selectedIndex = month;
currentButton.classList.remove('hide');
var dayTd = document.querySelector('.week-day.curDay');
if (dayTd) dayTd.classList.remove('curDay');
var cls = ['prevMonth', 'curMonth', 'nextMonth'],
indexCls = 0;
var html = data.reduce(function(value, current, index, source) {
var date = current.getDate();
if (date == 1) indexCls++;
var className = cls[indexCls];
if (+now == +current && indexCls == 1) {
className += ' curDay';
currentButton.classList.add('hide');
daysTd[index % 7].classList.add('curDay');
}
if (current.getDay() == 1) value += '<tr>';
return value + '<td class="' + className + '">' + date;
}, '');
document.querySelector('#table tbody').innerHTML = html;
}
createCalendar(data);
var timer;
function refresh() {
window.clearTimeout(timer);
var finish = new Date().setHours(24, 0, 0, 0);
finish -= data;
timer = window.setTimeout(function() {
createCalendar(data);
refresh();
}, finish);
}
refresh();
</script>
</body>
</html>
