Responsive Table trên mobile với CSS/HTML như thế nào?

Cách căn bản, bạn add css sau vào nhé:

HTML:

@media (max-width:767px){
    table{
        border-collapse:collapse;
        border-spacing:0;
        margin:0 auto;
        width:100%;
        overflow-x:auto;
        display:block;
        background-color:#f4f4f4;
        max-width:400px
    }
}

Responsive theo chiều đứng:

HTML:

table {
  border: 1px solid #ccc;
  border-collapse: collapse;
  margin: 0;
  padding: 0;
  width: 100%;
  table-layout: fixed;
}

table caption {
  font-size: 1.5em;
  margin: .5em 0 .75em;
}

table tr {
  background-color: #f8f8f8;
  border: 1px solid #ddd;
  padding: .35em;
}

table th,
table td {
  padding: .625em;
  text-align: center;
}

table th {
  font-size: .85em;
  letter-spacing: .1em;
  text-transform: uppercase;
}

@media screen and (max-width: 600px) {
  table {
    border: 0;
  }

  table caption {
    font-size: 1.3em;
  }
 
  table thead {
    border: none;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
  }
 
  table tr {
    border-bottom: 3px solid #ddd;
    display: block;
    margin-bottom: .625em;
  }
 
  table td {
    border-bottom: 1px solid #ddd;
    display: block;
    font-size: .8em;
    text-align: right;
  }
 
  table td::before {
    /*
    * aria-label has no advantage, it won't be read inside a table
    content: attr(aria-label);
    */
    content: attr(data-label);
    float: left;
    font-weight: bold;
    text-transform: uppercase;
  }
 
  table td:last-child {
    border-bottom: 0;
  }
}

Muốn nâng cao bạn xem các bài viết sau:

• https://css-tricks.com/responsive-data-tables/
• https://www.w3schools.com/howto/howto_css_table_responsive.asp
• https://codepen.io/AllThingsSmitty/pen/MyqmdM

Code khác trên wodpress:

HTML:

.entry-content table
{

border: 1px solid #ccc;
border-collapse: collapse;
margin: 0;
padding: 0;
width: 100%;
table-layout: fixed;
word-wrap: break-word;
}
@media screen and (max-width: 767px) {
.entry-content table td,
.entry-content table th,
.entry-content table tr
{
height: auto !important;
vertical-align: top;
}

.entry-content table{
        border-collapse:collapse;
        border-spacing:0;
        margin:0 auto;
        width:100%;
        overflow-x:auto;
        display:block;
        background-color:#f4f4f4;
        max-width:400px;
height: auto !important;
}
.entry-content table td,
.entry-content table th
{
max-width: 300px !important;
}
}