@charset "utf-8";
.sp-menu{
    max-width: 700px;
}

.sp-menu a{
    display: block;
    padding: 15px;
    text-decoration: none;
    color: #000;
}

label{
    display: block;
    margin: 0 0 4px 0;
    padding : 15px;
    line-height: 1;
    color :#fff;
    background : #7f1083;
    cursor :pointer;
}

input{
    display: none;
}

.sp-menu ul{
    margin: 0;
    padding: 0;
    background :#ffffff;
    list-style: none;
}

.sp-menu li{
    height: 0;
    overflow: hidden;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
    -ms-transition: all 0.5s;
    -o-transition: all 0.5s;
    transition: all 0.5s;
}

#menu_top:checked ~ #link_top li,
#menu_article:checked ~ #link_article li,
#menu_paper:checked ~ #link_paper li,
#menu_contribute:checked ~ #link_contribute li,
#menu_editorial:checked ~ #link_editorial li,
#menu_link:checked ~ #link_link li,
#menu_about:checked ~ #link_about li{
    height: 54px;
    opacity: 1;
}