.logo{
    width: 150px;
    height: 50px;
    position: relative;
    margin-top: -15px;
    line-height: 50px;
    border-radius: 10px;
    color: #fff;
}
.hg{
    line-height: 12px;
}
#jz{
    position:relative;
    left: 45%;
}
#name,#email,#message,#kkk{
    position:relative;
    left: 5%;
}
.gywm{
    color: #fff;
    text-align: center;
}
#bbb{
    width: 100%;
    height: 935px;
    background-image: url(../images/bg.jpg);
    background-repeat: no-repeat;
    background-size: cover;
}
#btm{
    background-color: rgba(0, 0, 0, 0.5);
}
.xiayi{
    margin-top: 15%;
}
.dl{
    margin-left: 10%;
    width: 280px;
    height: 180px;
    color: #fff;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 10px;
    border-radius: 10px;
}
.bt{
    text-align: center;
    font-weight: 700;
    font-size: 24px;
}
.dl tr{
    margin: 0 auto;
    text-align: center;
}
#btn{
    background-color: rgb(24, 97, 233);
    border: none;
    padding: 5px;
    border-radius: 5px;
}
#btn:nth-child(2){
    margin-left: 20px;
}