JSFiddle - React, Tailwind, and code Playground

HTML

<div>
<table class="table1 overlay">
   <thead>
	   <tr>
        <th>Indice</th>
        <th>Charge</th>
         <th>Indice</th>
		    <th>Charge</th>
		    <th>Indice</th>
		    <th>Charge</th>
		    <th>Indice</th>
		    <th>Charge</th>
		    <th>Indice</th>
		    <th>Charge</th>
		    <th>Indice</th>
		    <th>Charge</th>
		    <th>Indice</th>
		    <th>Charge</th>
    </tr>
  </thead>
   
  <tbody>
	  <tr>
		  <td><b>50</b></td>
		  <td>190 kg</td>
		  <td><b>60</b></td>
		  <td>250 kg</td>
		  <td><b>70</b></td>
		  <td>335 kg</td>
		  <td><b>80</b></td>
		  <td>450 kg</td>
		  <td><b>90</b></td>
		  <td>600 kg</td>
		  <td><b>100</b></td>
		  <td>800 kg</td>
		  <td><b>110</b></td>
		  <td>1060 kg</td>
	</tr>
	<tr>
		<td><b>51</b></td>
		<td>195 kg</td>
		<td><b>61</b></td>
		<td>257 kg</td>
		<td><b>71</b></td>
		<td>345 kg</td>
		<td><b>81</b></td>
		<td>462 kg</td>
		<td><b>91</b></td>
		<td>615 kg</td>
		<td><b>101</b></td>
		<td>825 kg</td>
		<td><b>111</b></td>
		<td>1090 kg</td>
	</tr>
	<tr>
		<td><b>52</b></td>
		<td>200 kg</td>
		<td><b>62</b></td>
		<td>265 kg</td>
		<td><b>72</b></td>
		<td>355 kg</td>
		<td><b>82</b></td>
		<td>475 kg</td>
		<td><b>92</b></td>
		<td>630 kg</td>
		<td><b>102</b></td>
		<td>850 kg</td>
		<td><b>112</b></td>
		<td>1120 kg</td>
	</tr>
	<tr>
		<td><b>53</b></td>
		<td>206 kg</td>
		<td><b>63</b></td>
		<td>272 kg</td>
		<td><b>73</b></td>
		<td>365 kg</td>
		<td><b>83</b></td>
		<td>487 kg</td>
		<td><b>93</b></td>
		<td>650 kg</td>
		<td><b>103</b></td>
		<td>875 kg</td>
		<td><b>113</b></td>
		<td>1150 kg</td>
	</tr>
	<tr>
		<td><b>54</b></td>
		<td>212 kg</td>
		<td><b>64</b></td>
		<td>280 kg</td>
		<td><b>74</b></td>
		<td>375 kg</td>
		<td><b>84</b></td>
		<td>500 kg</td>
		<td><b>94</b></td>
		<td>670 kg</td>
		<td><b>104</b></td>
		<td>900 kg</td>
		<td><b>114</b></td>
		<td>1180 kg</td>
	</tr>
	<tr>
		<td><b>55</b></td>
		<td>218 kg</td>
		<td><b>65</b></td>
		<td>290 kg</td>
		<td><b>75</b></td>
		<td>387...

CSS

border: {
  font-family: cursive;
}

.table1 {
    border-collapse: collapse;
	margin: auto; /* Centre le tableau */
}

td, th /* Mettre une bordure sur les td ET les th */ {
	font-size: 0.9em;
    border: 1px solid black;
	padding: 2px 8px 2px 8px;
	text-align: center;
}

.overlay {
  overflow: overlay;
}