.yb_nav {
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 99;
    left: 0;
    padding: 5px 5%;
    border-bottom: solid #6b8436 3px;
    background: rgb(255, 255, 255, 0.8);
}
.yb_nav_flex{
    display: flex;
    justify-content: space-between;
}
.yb_nav_logo {
    width: 19%;
}
.yb_nav_plan {
    width: 13%;
}
#webc_con {
    margin-top: 80px;
}
@media screen and (max-width: 900px) {
.yb_nav_logo {
    width: 40%;
}
.yb_nav_plan {
    width: 26%;
}
}