.form {
    width: 100%;
    /* height: 200px; */
    position: fixed;
    bottom: 40px;
    background: url(../images/botbg.png) no-repeat top center;
    background-size: cover;
}

.msgInput {
    float: right;
    width: 50%;
    height: 25px;
    margin: 5px 6px 5px auto;
    background: #c481ea;
    font: 16px / 25px "Microsoft Yahei", sans-serif;
    color: #fff;
    border: 0;
    border-radius: 5px;
    text-indent: 1em;
}

.form .msgInput:first-child {
    margin-top: 10px;
}

.submitBtn {
    display: block;
    float: right;
    width: 50%;
    height: 25px;
    border-radius: 12.5px;
    margin: 0 6px 5px auto;
    background: #fff;
    font: 16px/25px "Microsoft Yahei", sans-serif;
    text-align: center;
    color: #8802d4;
}

.submitBtn:hover {
    background: rgb(248, 170, 0);
    color: #000;
}

input::-webkit-input-placeholder {
    color: #8802d4;
}

input::-moz-placeholder {
    /* Mozilla Firefox 19+ */
    color: #8802d4;
}

input:-moz-placeholder {
    /* Mozilla Firefox 4 to 18 */
    color: #8802d4;
}

input:-ms-input-placeholder {
    /* Internet Explorer 10-11 */
    color: #8802d4;
}