.container_fluid{
    padding-bottom: 20px;
    background-color: #f4f5f6;
}

.container_fluid .container{
    position: relative;
    background-color: #fff;
    padding-bottom: 35px;
    overflow: hidden;
}

.sanjiao{
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 0;
    width: 100%;
    height: 25px;
    background: #f4f5f6;
}

.sanjiao:after{
    position: absolute;
    left: 50%;
    top: 0;
    z-index: 100;
    content: '';
    width: 100%; 
    height: 0; 
    margin-left: -600px;
    border-top: 25px solid #fff;
    border-left: 600px solid transparent;
    border-right: 600px solid transparent;
}

.message_box{
    position: relative;
    padding: 5%;
    background: #fff;
}

.message_box .form-horizontal .form-group{
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 40px;
}

.message_box .form-horizontal .form-group label{
    padding-left: 0;
    padding-right: 0;
    line-height: 36px;
    color: #222222;
    font-size: 16px;
    font-weight: normal;
}

.message_box .form-group .col-sm-10{
    padding-left: 0;
    padding-right: 50px;
}

.message_box .form-group .col-sm-5{
    padding-left: 0;
}

.message_box .form-horizontal .form-group textarea{
    resize: none;
    margin-bottom: 10px;
}

.message_box label{
    white-space: nowrap;
}

.verifycode{
    width: 120px;
    height: 34px;
}

@media (max-width: 767px){
    .message_box .form-group .col-sm-10{
        padding-right: 15px;
    }

    .verifycode{
        width: 100%;
    }

    .message_box{
        padding: 5% 2%;
    }

    .message_box .form-horizontal .form-group{
        margin-bottom: 15px;
    }
}

@media (min-width: 768px){
    .message_box .form-group .col-sm-10{
        padding-left: 25px;
        padding-right: 15px;
    }

    .message_box .form-group .col-sm-5{
        padding-left: 25px;
        padding-right: 0;
    }
}