tr {
    border: 1px solid #ccc;
    padding: 1em;
    display: block;
    margin-bottom: 1em;
}
td:first-child {
    font-size: 1rem;
}
table.t_schedule {
    display: table;
    width: 100%;
}
table.t_schedule tr {
    display: table-row;
}
table.t_schedule tr td:first-child {
    width: 33%;
    background-color: #eee;
    text-align: center;
}
table.t_schedule tr td {
    display: table-cell;
    padding: 1em;
}
table.t_schedule tr td:last-child {
    width: 66%;
}

@media screen and (max-width:600px){
table.t_schedule tr td:first-child,table.t_schedule tr td:last-child {
    width: 50%;
}
}