.title {
    width: 100%;
    height: 40px;
    line-height: 40px;
    font-weight: 500;
    color: #3D3D3D;
    text-align: center;
    margin: 3.9rem 0 6.9rem;
    font-size: 28px;
}

.messageinfo {
    margin-bottom: 39.6rem;
}

.left {
    width: 50%;
    float: left;
    padding-right: 3.5rem;
}

.leftimg {
    display: inline-block;
    width: 100%;
    height: auto;
    min-height: 100%;
    position: relative;
    padding-bottom: 53%;
    overflow: hidden;
}

.leftimg img {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
}

.tips {
    color: #717171;
    font-size: 16px;
    margin-top: 3rem;
    width: 100%;
    line-height: 25px;
}

.rightinput {
    width: 50%;
    float: left;
}

.mesbox {
    width: 100%;
    border: 1px solid #DDDDDD;
    line-height: 50px;
    display: flex;
    justify-content: space-between;
    margin-bottom: 1.3rem;
}

.mesbox input {
    height: 40px;
    border: none;
    outline: none;
    font-size: 16px;
    flex-grow: 0.8;
    margin-top: 7px;
    margin-left: 2.4rem;
}

.mesicon {
    margin-right: 1.2rem;
}

.mesicon img {
    width: 100%;
}

.mesbox textarea {
    border: none;
    outline: none;
    resize: none;
    font-size: 16px;
    box-shadow: none !important;
    margin: 7px 0 7px 1.3rem;
}

.submit {
    padding: 1.6rem 2.8rem;
    font-size: 16px;
    color: #fff;
    background-color: #E5735B;
}

.submit:hover {
    background-color: #BF4E37;
}


/* 宽度小于769px */

@media screen and (max-width: 769px) {
    .left,
    .rightinput {
        width: 100%;
        clear: both;
        padding: 0;
    }
    .tips {
        margin: 30px 0;
    }
    .mesbox {
        margin-bottom: 10px;
    }
    .submit {
        padding: 16px 28px;
    }
}


/* 宽度小于530px  iphone 5/SE 、678 */

@media screen and (max-width: 530px) {
    .title {
        margin: 20px 0;
    }
    .msgname {
        margin-left: 8px;
    }
    .mesicon {
        margin-right: 10px;
    }
    .tips {
        width: 100%;
    }
}