.d_1{
    width: 1200px;
    height: auto;
    margin: 100px auto;
    color: #252525;
}
.d_2{
    font-size: 34px;
    font-weight: bold;
    text-align: center;
}
.d_3{
    font-size: 18px;
}
.detail p img{
    width: 100%;
    height: auto;
}
.d_2,.d_3,.d_4,.detail p img{
    margin-bottom: 50px;
}
.d_4{
    font-size: 24px;
    font-weight: bold;
}
.d_5{
    margin-bottom: 30px;
}