html, body {
    height: 100%;
	scroll-behavior: smooth;
}
body {
    background: #F1F3F6;
    margin: 0;
    padding: 0;
 }
 
 #wrap  {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    min-height: 100%; 
 }
#wrap main {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
   
}
header {
    display: flex;
    background-color: #fff;
    padding: 15px;
    border-bottom: 1px solid #f0f2f4;
    justify-content: space-between;
    align-items: center;
}
header .h_left {
    display: flex;
     align-items: baseline;
}
header .back{
    width: 80%;
 
}
header .title{
   font-size: 20px;
   white-space: nowrap;
   margin-left: 10px;
 font-weight: 500;
}
header .h_right .logo{
   width: 100px;
 
}
#wrap .content {
    padding: 15px 15px 30px;
}
#wrap .content .sub_title{
    font-size: 25px;
    font-weight: 600;
    color: #00133d;
    border-bottom: 1px solid #eaedef;
    padding:25px 0 10px;
    letter-spacing: 0.1px;
    letter-spacing: -1px;
}

footer { text-align: center; padding: 2rem 0; background: #efefef;}
footer p { line-height: 1.3;}
footer b { font-weight: 600;}
@media screen and (max-width: 900px) {
    main {
        flex-direction: column-reverse;
    }
    header {
        padding: 12px;
    }
    header .back{
        width: 60%;
     
    }
    header .title{
       font-size:16px;
       white-space: nowrap;
       margin-left: 0;
    }
    header .h_right .logo{
       width: 75px;
     
    }
    #wrap .content .sub_title{
        font-size: 20px;
        font-weight: 600;
        color: #00133d;
        border-bottom: 1px solid #eaedef;
        padding:25px 0 10px;
       
    }
}