.tit-nav-li:nth-child(3) {
    background-color: #638df9;
}

.tit-nav-li:nth-child(3) a {
    color: white;
}

.ban-tit {
    width: 100%;
    height: 300px;
    background: url("../upload/forum.png") no-repeat;
    background-size: 100%;
    overflow: hidden;
    margin-bottom: 30px;
}

.bg-tit {
    width: 300px;
    height: 100px;
    text-align: center;
    margin: 0 auto;
    margin-top: 70px;
}

.bg-tit h2 {
    width: 300px;
    height: 50px;
    line-height: 50px;
    font-size: 36px;
    font-weight: 300;
    color: white;
    letter-spacing: 5px;
}

.bg-tit h3 {
    width: 300px;
    height: 35px;
    line-height: 35px;
    font-size: 18px;
    font-weight: 300;
    color: white;
    letter-spacing: 2px;
}

.for-item {
    width: 85%;
    min-width: 1200px;
    margin: 0 auto;
    margin-bottom: 20px;
}

.item {
    position: relative;
    width: 100%;
    height: 300px;
    border: 2px solid #eee;
    margin-top: 30px;
}

.item-pic {
    width: 300px;
    max-width: 300px;
    height: 300px;
    overflow: hidden;
}

.item-pic img {
    height: 100%;
}

.item-cont {
    width: 70%;
    min-width: 800px;
    margin-left: 25px;
}

.item-cont h4 {
    margin-top: 30px;
    color: black;
    font-size: 24px;
}

.item-cont p {
    margin-top: 20px;
    color: black;
    font-size: 20px;
    text-indent: 2em;
    word-wrap: break-word;
}

.cont-num {
    position: absolute;
    bottom: 20px;
    right: 0;
    width: 200px;
    height: 30px;
}

.pag {
    margin-bottom: 80px;
}

.pag ul {
    float: right;
    margin-top: 50px;
}

.pag ul li {
    float: left;
    width: 30px;
    height: 30px;
    text-align: center;
    line-height: 30px;
    color: white;
    font-size: 14px;
    font-weight: 700;
    background-color: skyblue;
    cursor: pointer;
    margin-left: 10px;
}

.pag-current {
    color: black!important;
}

.mesg {
    width: 85%;
    height: 600px;
    margin: 0 auto;
    margin-bottom: 50px;
}

.mesgl {
    margin-top: 50px;
    width: 500px;
    height: 400px;
    border: 2px solid #ccc;
    border-radius: 20px;
}

.mesgl-tit {
    width: 450px;
    height: 50px;
    margin: 0 auto;
    margin-top: 30px;
    margin-bottom: 20px;
    font-size: 30px;
    color: black;
}

.mesgl-cont {
    width: 450px;
    margin: 0 auto;
    font-size: 18px;
    line-height: 80px;
    text-indent: 2em;
}

.mesgr {
    width: 600px;
    height: 600px;
    margin-top: 50px;
    margin-left: 100px;
}

.mesgr-tit {
    width: 550px;
    font-size: 30px;
    color: black;
}

.tab-one {
    width: 600px;
    height: 40px;
    border: 2px solid #0e88fa;
    border-radius: 5px;
    margin-bottom: 5px;
    color: #999;
}

.tab-two {
    width: 600px;
    height: 200px;
    border: 2px solid #0e88fa;
    border-radius: 5px;
    margin-bottom: 5px;
    color: #999;
    resize: none;
    outline: none;
}

.tab-three {
    width: 500px;
    height: 80px;
    border: 2px solid #0e88fa;
    border-radius: 5px;
    margin-bottom: 5px;
}

.tab-file input {
    opacity: 0;
    width: 70px;
    height: 70px;
    cursor: pointer;
}

.tab-file {
    width: 70px;
    height: 70px;
    margin-top: 3px;
    margin-left: 5px;
    background: url(../img/addpic.png) no-repeat;
    border: 2px solid #ccc;
    border-radius: 5px;
    overflow: hidden;
}

.com {
    width: 84px;
    height: 84px;
    border-radius: 5px;
    border: 2px solid #0e88fa;
    margin-bottom: 5px;
    cursor: pointer;
    background-color: #0e88fa;
    color: white;
    font-size: 24px;
}