.title_membership{
    background-color:rgb(86,88,87);
    color: white;
    text-align: center;
}

.list_square:before{
    content:'■';
 }
 
.list_hyphen:before{
    content:'ー'
}

@media screen and (min-width: 768px) {
    body{
        margin-top:30px;
    }
}