html, body{
    width: 100%;
    margin: 0px;
    padding: 0px;
    overflow-x: hidden; 
    overflow-y: auto; 
}

*{
    font-size: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-weight: normal;
    color: #0D0D0D;
    outline: none;
    list-style: none;
    text-decoration: none;
}

nav{
    display: flex;
    position: fixed;
    width: 100%;
    background: #191919;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    z-index: 1;
}
    nav .logo img{
        width: 80px;
        margin-left: 40px;
    }
    nav ul{
        display: flex;
        margin-right: 40px;
    }
    nav li{
        width: 110px;
    }
    nav a{
        font-weight: 500;
        color: #999;
    }
    li a.active, li a:hover{
        border-bottom: 2px solid  #cecece;
        color: #cecece;
    }
    nav #menu{
        cursor: pointer;
        display: none;
        margin-right: 40px;
    }
    nav #menu img{
        width: 22px;
    }

.banner{
    padding: 100px 80px;
    display: flex;
    justify-content: space-between;
}
    .banner h1{
        font-size: 50px;
        font-weight: bold;
        line-height: 55px;
        margin-top: 20px;
        width: 600px;
        display: flex;
        flex-direction: column;
    }
    .banner img{
        width: 450px;
    }
    .banner h1 span{
        margin-top: 30px;
        width: 260px;
        background: #F2F2F2;
        border-radius: 20px;
        font-weight: 500;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
        padding: 10px;
    }
    .banner h1 span img{
        width: 20px;
        height: 24px;
        margin-left: 10px;
    }
    .banner h1 span:hover{
        background: #A6A6A6;
    }

.info-aplikasi{
    background:#F2F2F2;
    padding: 100px 80px;
    display: flex;
    flex-direction: column;
    border-top-left-radius: 50px;
    border-top-right-radius: 50px;
}

.fitur{
    display: flex;
    justify-content: space-between;
}
    .fitur img{
        width: 220px;
    }
    .fitur .pdf, .fitur .latex{
        display: flex;
        font-size: 20px;
        align-items: center;
        width: 500px;
        font-weight: 500;
    }

.sumber{
    display: flex;
    font-size: 22px;
    font-weight: 500;
    margin-top: 200px;
    justify-content: space-evenly;
}
    .sumber img{
        width: 380px;
    }

.kontributor{
    margin-top: 140px;
    display: flex;
    flex-direction: column;
    text-align: center;
}
    .kontributor h1{
        font-size: 30px;
        font-weight: bold;
    }
    .kontributor img{
        width: 20px;
    }
    .kontributor span{
        font-size: 20px;
        font-weight: 500;
    }

.pengembang{
    margin: 100px 60px;
    display: flex;
    justify-content: space-evenly;
}
    .pengembang .nama, .pengembang .sosmed{
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .pengembang .nama, .pengembang .sosmed{
        font-weight: bold;
    }
    .pengembang .nama h1{
        font-size: 40px;
        font-weight: 500;
        margin: 0;
    }
    .pengembang img{
        width: 40px;
    }

@media(max-width: 1200px){
    .banner h1{
        font-size: 44px;
        line-height: 45px;
    }
    .banner img{
        width: 350px;
    }
    .sumber{
        font-size: 20px;
    }
    .sumber img{
        width: 300px;
    }
}

@media(max-width: 1000px){
    .fitur img{
        width: 160px;
    }
    .fitur .pdf, .fitur .latex, .sumber, .kontributor span{
        font-size: 18px;
    }
    .sumber img{
        width: 240px;
    }
    .banner h1{
        font-size: 40px;
        line-height: 45px;
    }
}
@media(max-width: 870px){
    nav #menu{
        display: block;
    }
    nav ul{
        position: fixed;
        width: 50%;
        height: 100vh;
        background: #191919;
        top: 46px;
        right: -500px;
        text-align: center;
        transition: all .8s;
    }
    nav ul{
        flex-direction: column;
        align-items: center;
    }
    nav ul.show-menu{
        right: -40px;
    }
    nav li{
        margin: 12vh 0;
    }
    nav a{
        font-size: 18px;
    }
    a.active, a:hover{
        border-bottom: none;
        color: #fff;
    }
    .logo img{
        width: 60px;
    }
    .banner{
        flex-direction: column-reverse;
        align-items: center;
    }
    .banner h1{
        width: auto;
    }
    .info-aplikasi{
        align-items: center;
    }
    .sumber img{
        width: 160px;
        padding-right: 10px;
    }
    .banner h1{
        font-size: 30px;
        line-height: 35px;
    }
    .fitur{
        flex-direction: column;
        align-items: center;
    }
    .fitur .latex, .sumber, .kontributor{
        margin-top: 100px;
        width: 500px;
    }
    .pengembang .nama h1{
        font-size: 30px;
    }
    .pengembang .sosmed img{
        width: 30px;
    }
}

@media(max-width: 600px){
    .banner, .info-aplikasi{
        padding: 100px 30px;
    }
    .fitur .pdf, .fitur .latex, .sumber{
        flex-direction: column;
        width: auto;
        text-align: center;
    }
    .sumber{
        align-items: center;
        font-size: 16px;
    }
    .banner h1{
        font-size: 24px;
        text-align: center;
        line-height: 24px;
    }
    .banner h1 span{
        width: 240px;
        font-size: 14px;
    }
    .banner img{
        width: 240px;
    }
    .kontributor h1{
        font-size: 24px;
    }
    .pengembang{
        flex-direction: column;
    }
    .pengembang .nama h1{
        margin-top: 0;
    }
    .pengembang .nama, .pengembang .sosmed{
        text-align: center;
    }
}