.graph_sp {
    display: block;
    width: 100%;
    margin-top: 20px;
}

.graph_pc {
    display: none;
}

@media screen and (min-width: 768px) {

.graph-box {
    width: 80%;
}

.graph_pc {
    display: block;
    width: 55%;
    margin-left: auto;
}
.graph_sp {
    display: none
}


}