/*** for PC Browser ***/
@media (min-width:401px)
{
.box12 {
    padding: 1em 1em;
    margin: 0;
    border: solid 5px #235BC8;
}
.box12 p {
    margin: 0; 
    padding: 0.5em;
}
}


/*** for Smart Phone ***/
@media (max-width:400px)
{
.box12 {
    padding: 1em 1em;
    margin: 0;
    border: solid 5px #235BC8;
}
.box12 p {
    margin: 0; 
    padding: 0.5em;
}
}