@media only screen and (max-width: 767px){
.pc_only{
display: none !important;
}
table {
    width: 100% !important;
}
}
@media only screen and (min-width: 768px){
.sp_only{
display: none !important;
}
th.tb-gray {
    width: 25%;
}
td {
    width: 75%;
}
}