html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

..tab_wrap {
    width: 500px;
    margin: 80px auto;
}

input[type="radio"] {
    display: none;
}

.tab_area {
    font-size: 0;
    margin: 0 10px;
}

    .tab_area label {
        width: 150px;
        margin: 0 5px;
        display: inline-block;
        padding: 12px 0;
        color: #999;
        background: #ddd;
        text-align: center;
        font-size: 13px;
        cursor: pointer;
        transition: ease 0.2s opacity;
    }

        .tab_area label:hover {
            opacity: 0.5;
        }

.panel_area {
    background: #fff;
}

.tab_panel {
    width: 100%;
    padding: 80px 0;
    display: none;
}

    .tab_panel p {
        font-size: 14px;
        letter-spacing: 1px;
        text-align: center;
    }

#tab1:checked ~ .tab_area .tab1_label {
    background: #fff;
    color: #000;
}

#tab1:checked ~ .panel_area #panel1 {
    display: block;
}

#tab2:checked ~ .tab_area .tab2_label {
    background: #fff;
    color: #000;
}

#tab2:checked ~ .panel_area #panel2 {
    display: block;
    display: block;
}