JSFiddle - React, Tailwind, and code Playground

by John Doe

HTML

<div id='table_wrapper'><table class=week><colgroup>
		<col/>
		<col class='mo'/>
		<col class='di'/>
		<col class='mi'/>
		<col class='do'/>
		<col class='fr'/>
		<col class='sa'/>
		<col class='so'/>
	</colgroup>
	<thead><tr><th class='kw'>KW 01</th><th class='mofr'>Mo, 01.1.2018</th><th class='mofr'>Di, 02.1.2018</th><th class='mofr'>Mi, 03.1.2018</th><th class='mofr'>Do, 04.1.2018</th><th class='mofr'>Fr, 05.1.2018</th><th class='we'>Sa, 06.1.2018</th><th class='we'>So, 07.1.2018</th></tr></thead><tbody><tr><th class='ma'>1</th>
  <td id='1_01_01_2018'>
    

<button data-myID='image_ap_1_01_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='1_02_01_2018'>
    

<button data-myID='image_ap_1_02_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='1_03_01_2018'>
    

<button data-myID='image_ap_1_03_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='1_04_01_2018'>
    

<button data-myID='image_ap_1_04_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='1_05_01_2018'>
    

<button data-myID='image_ap_1_05_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='1_06_01_2018'>
    

<button data-myID='image_ap_1_06_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='1_07_01_2018'>
    

<button data-myID='image_ap_1_07_01_2018_1514761200_2'>xyz</button>

   </td></tr><tr><th class='ma'>2</th>
  <td id='2_01_01_2018'>
    

<button data-myID='image_ap_2_01_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='2_02_01_2018'>
    

<button data-myID='image_ap_2_02_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='2_03_01_2018'>
    

<button data-myID='image_ap_2_03_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='2_04_01_2018'>
    

<button data-myID='image_ap_2_04_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='2_05_01_2018'>
    

<button data-myID='image_ap_2_05_01_2018_1514761200_2'>xyz</button>

   </td>
  <td id='2_06_01_2018'>
    

<button data-myID='image_ap_2_06_01_2018_1514761200_2'>xyz</button>

   </td>
  <td...

CSS

body
{
	width: 100vw;
	height: 100vh;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
}

#table_wrapper
{
    white-space: nowrap;
		flex: 1;
	overflow: auto;

}

.week
{
	display: inline-table;
	border-collapse: separate;
	border-spacing: 0;
	background-color: white;
	color: black;
	margin: 2px;
}


.week th,
.week td
{
	border: solid #808080;
	border-width: 0 thin thin 0;
	width: 15vw;
	min-height: 70px;
	padding: 0px;
	text-align: center;
	vertical-align: middle;
	font-weight: normal;
}

.week thead th
{
	border-top-width: thin;
}

.week th:first-child
{
	border-left-width: thin;	
}

.week td
{
	font-size: 1.75em;
	position: relative;
}