.YH-logo{
text-align:right;
margin-top:24px;
margin-bottom:0.34em;
}

.YH-logo img{
width:81%;
}
.YH-logo-mobile{
margin-top:24px;
margin-bottom:0.34em;
}
@media screen and (min-width:641px){
.YH-logo-mobile{
display:none; 
}}

@media screen and (max-width:640px){
.site-name, .YH-logo{
display:none;
}
}