body{
    background: #f2f2f2;
}
.explain-item p{
    text-indent: 2em;
    font-size: 16px;
    color: #000000;
    line-height: 35px;
}
.explain-item h3{
    padding-top: 30px;
}
.explain-item p:last-child{
    padding-bottom: 50px;
}