html,
body {
    width: 100%;
    max-width: 100%;
    height: 100%;
    margin: 0;
    font-size: 15px;
}
.hide {
    display: none;  /*要素の非表示*/
}
.data {
    display: none;
}
.news_list {
    list-style: none;
    font-size: medium;
    width: 100%;
    height: 50px;
}
footer .tab {
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 50px;
    left: 0;
    -moz-box-shadow: 0px -10px 20px -15px rgba(0, 0, 0, 0.8);
    -webkit-box-shadow: 0px -10px 20px -15px rgba(0, 0, 0, 0.8);
    -ms-box-shadow: 0px -10px 20px -15px rgba(0, 0, 0, 0.8);
    box-shadow: 0px -10px 20px -15px rgba(0, 0, 0, 0.8);
    background-color: black;
    z-index: 100;
}
footer .tab .tab_ {
    position: relative;
    z-index: 2000;
    float: left;
    height: 50px;
    background-color: #f5f5f5;
    width: calc((100% - 5px - 70px - 50px - 50px) / 3);
    text-align: center;
    font-size: 15px;
}
#tab1 {
    margin-left: 0px;
}
#tab2 {
    margin-left: 1px;
}
#tab3 {
    margin-left: 1px;
}
#tab4 {
    width: 70px;
    margin-left: 1px;
}
#tab5 {
    width: 50px;
    margin-left: 1px;
}
#tab6 {
    width: 50px;
    margin-left: 1px;
}