.dl-menu {
    margin-left: 0;
    padding-left: 0;
}
.dl-menu li {
    list-style-type: none;
}

a {
    text-decoration: underline;
}

.logo {
    margin-bottom: 50px;
}

.pt-page {
    font-family: sans-serif;
    font-size: 24px;
    /*font-size: 1.5em;*/
    color: #cccccc;
    line-height: 40px;
    /*line-height: 1.5;*/
}

.pt-page p {
    margin-top: 20px;
    margin-bottom: 20px;
}

.page-content {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    margin: 0 auto;
    /*border: red 1px solid;*/
}

.page-header {
    margin-top: 1%;
}

#btn-down-1, #btn-down-2, #btn-up-2, #btn-up-3 {
    cursor: pointer;
}

.page-footer {
    position: absolute;
    bottom: 1%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
}

.pt-page-1 {
    background: url(../img/bg1.jpg) center;
    background-size: cover;
}
.page-content-1 h1 {
    font-family: sans-serif;
    font-size: 24px;
    font-weight: normal;
}
.page-content-1 h2 {
    font-family: sans-serif;
    font-size: 24px;
    font-weight: normal;
}

.pt-page-2 {
    background: url(../img/bg2.jpg) center;
    background-size: cover;
}

.pt-page-3 {
    background: url(../img/bg3.jpg) center;
    background-size: cover;
}

@media screen and (max-width: 1366px) {
    .pt-page {
        /*border: red 1px solid;*/
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
    }
    .page-content-1 h2 {
    }
}
@media screen and (max-width: 1024px) {
    .pt-page {
        font-size: 28px;
        /*border: cyan 1px solid;*/
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 28px;
    }
    .page-content-1 h2 {
        font-size: 28px;
    }
    .btn-down, .btn-up {
        width: 60px;
        height: 60px;
    }
}
@media screen and (max-width: 823px) {
    .pt-page {
        font-size: 20px;
        /*border: cyan 1px dashed;*/
        line-height: 1;
    }
    .logo {
        margin-bottom: 0px;
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 20px;
    }
    .page-content-1 h2 {
        font-size: 20px;
    }
    .btn-down, .btn-up {
        width: 50px;
        height: 50px;
    }
}
@media screen and (max-width: 414px) {
    .pt-page {
        font-size: 18px;
        line-height: 1;
        /*border: green 1px solid;*/
    }
    .pt-page p {
        margin-top: 20px;
        margin-bottom: 20px;
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 18px;
    }
    .page-content-1 h2 {
        font-size: 18px;
    }
}
@media screen and (max-width: 812px) {
    .pt-page {
        font-size: 16px;
        line-height: 1;
        /*border: yellow 1px solid;*/
    }
    .pt-page p {
        margin-top: 10px;
        margin-bottom: 10px;
    }
    .logo {
        margin-bottom: 20px;
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 16px;
    }
    .page-content-1 h2 {
        font-size: 16px;
    }
    .btn-down, .btn-up {
        width: 40px;
        height: 40px;
    }
}
@media screen and (max-width: 768px) {
    .pt-page {
        font-size: 38px;
        line-height: 1;
        /*border: #f68dbb 1px solid;*/
    }
    .pt-page p {
        margin-top: 10px;
        margin-bottom: 10px;
    }
    .logo {
        margin-bottom: 50px;
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 38px;
    }
    .page-content-1 h2 {
        font-size: 38px;
    }
    .btn-down, .btn-up {
        width: 80px;
        height: 80px;
    }
}
@media screen and (max-width: 736px) {
    .pt-page {
        font-size: 20px;
        line-height: 1;
        /*border: blue 1px solid;*/
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 20px;
    }
    .page-content-1 h2 {
        font-size: 20px;
    }
    .btn-down, .btn-up {
        width: 50px;
        height: 50px;
    }
}
@media screen and (max-width: 667px) {
    .pt-page {
        font-size: 20px;
        line-height: 1;
        /*border: orange 1px solid;*/
    }
    .page-content {
        width: 90%;
    }
    .logo {
        margin-bottom: 0px;
    }
    .page-content-1 h1 {
        font-size: 20px;
    }
    .page-content-1 h2 {
        font-size: 20px;
    }
    .btn-down, .btn-up {
        width: 50px;
        height: 50px;
    }
}
@media screen and (max-width: 653px) {
    .pt-page {
        font-size: 16px;
        line-height: 1;
        /*border: purple 1px solid;*/
    }
    .pt-page p {
        margin-top: 10px;
        margin-bottom: 10px;
    }
    .logo {
        margin-bottom: 0px;
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 16px;
    }
    .page-content-1 h2 {
        font-size: 16px;
    }
    .btn-down, .btn-up {
        width: 40px;
        height: 40px;
    }
}
@media screen and (max-width: 540px) {
    .pt-page {
        font-size: 20px;
        line-height: 1;
        /*border: grey 1px solid;*/
    }
    .pt-page p {
        margin-top: 10px;
        margin-bottom: 10px;
    }
    .logo {
        margin-bottom: 50px;
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 20px;
    }
    .page-content-1 h2 {
        font-size: 20px;
    }
    .btn-down, .btn-up {
        width: 50px;
        height: 50px;
    }
}
@media screen and (max-width: 280px) {
    .pt-page {
        font-size: 16px;
        line-height: 1;
        /*border: white 1px solid;*/
    }
    .pt-page p {
        margin-top: 10px;
        margin-bottom: 10px;
    }
    .logo {
        margin-bottom: 0;
    }
    .page-content {
        width: 90%;
    }
    .page-content-1 h1 {
        font-size: 16px;
    }
    .page-content-1 h2 {
        font-size: 16px;
    }
    .btn-down, .btn-up {
        width: 40px;
        height: 40px;
    }
}