.first{
    margin-bottom: 50px;
}
.first img{
    width: 100vw;
}
.two {
    margin-bottom: 50px;
    text-align: center;
}
.two img{
    width: 1200px;
    height: 764px;
}
.three {
    margin-bottom: 50px;
    text-align: center;
}
.three img{
    width: 1200px;
    height: 764px;
}
.four{
    margin-bottom: 50px;
    text-align: center;
}
.four img{
    width: 1200px;
    height: 764px;
}
.five{
    margin-bottom: 65px;
    text-align: center;
}
.five img{
    width: 1200px;
    height: 764px;
}