.index_body {
    background: url(../img/country/loli.png);
    height: 100%;
    width: 100%;
    overflow: auto;
    background-position: center center;
    background-size: cover;

}

.index_div {
    width: 100%;
    height: 100%;
    margin: 0 auto;
    position: absolute;
}

.logo_div {
    position: relative;
    left: 70px;
    top: 8%;
    width: 70px;
    height: 70px;
    cursor: default;
    z-index: 999;
}

.logo_img {
    width: 70px;
    height: 70px;
}

.top_div {
    display: inline-block;
    position: relative;
    color: black;
    font-size: 25px;
    font-weight: 600;
    top: 50%;
    left: 90px;
    width: 35px;
    transform: translate(0, -50%);
}

.top_text {
    font-size: 30px;
    letter-spacing: 5px;
    color: black;
}

.main_div {
    position: absolute;
    margin: 0 auto;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    padding: 0px 5px;
    background-color: rgba(255, 255, 255, 0.9);
    padding-bottom: 10px;  
    border-radius: 10px;

}

/* 留言墙 */
.message_top_text {
    text-align: center;
    padding: 10px 0px;
    font-size: 25px;
    letter-spacing: 2px;
}

.message_div {
    width: 500px;
    height: 400px;
    margin-bottom: 10px;
    overflow: auto;
    padding: 0px 10px;
    letter-spacing: 2px;
    line-height: 25px;
    font-size: 16px;
}

[contenteditable] {
    outline: 0px solid transparent;
  }

.send_btn {
    position: relative;
    margin: 0 auto;
    letter-spacing: 2px;
    cursor: pointer;
    width: 140px;
    height: 35px;
    text-align: center;
    background-color: #fde3af;
    border-radius: 6px;
    line-height: 35px;
    float: left;
    margin-left: 107px;
}

.empty_btn {
    position: relative;
    margin: 0 auto;
    letter-spacing: 2px;
    cursor: pointer;
    width: 140px;
    height: 35px;
    text-align: center;
    background-color: #e7e6e6;
    border-radius: 6px;
    float: left;
    margin-left: 24px;
    line-height: 35px;
}

.bottom_tip {
    position: relative;
    margin-top: 63px;
    clear: both;
    font-size: 14px;
    text-align: center;
}