* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: muli, sans-serif;
    background: #1f223e;
    color: #fff;
    overflow-x: hidden;
    transition: .2s linear;
}

a {
    text-decoration: none;
    transition: all .3s ease 0s;
    color: #fff;
}

a:hover {
    transition: all .3s ease 0s !important;
    color: #88b1ff !important;
    text-shadow: 0 0 3px #88b1ff !important;
}

header {
    background: #262947;
    width: 100%;
    height: 150px;
    display: block;
}

    .header_content {
        display: flex;
        position: relative;
        justify-content: center;
        align-items: center;
        width: 100%;
    }

        .header_content .logo {
            position: relative;
            width: 20%;
        }

            .header_content .logo a {
                display: block;
                height: 100%;
                width: 100%;
            }

                .header_content .logo a img {
                    padding: 40px 0;
                    transition: all .4s ease 0s;
                    -webkit-filter: brightness(1);
                    -moz-filter: brightness(1);
                    -o-filter: brightness(1);
                    -ms-filter: brightness(1);
                    filter: brightness(1);
                    height: 100%;
                }

                .header_content .logo a.logo-light {
                    display: none;
                }

                    .header_content .logo a.logo-normal img:hover {
                        transition: all .4s ease 0s;
                        -webkit-filter: brightness(1.3);
                        -moz-filter: brightness(1.3);
                        -o-filter: brightness(1.3);
                        -ms-filter: brightness(1.3);
                        filter: brightness(1.3);
                    }

        .header_content .social {
            position: relative;
            width: 7%;
        }

            .header_content .social ul {
                list-style: none;
                padding: 0;
                display: flex;
                position: relative;
                justify-content: center;
                align-items: center;
            }

                .header_content .social ul > li {
                    width: 50%;
                    text-align: center;
                }

                    .header_content .social ul>li:first-child a,
                    .header_content .social ul>li:first-child a:hover {
                        color: #0e8cf1 !important;
                        text-shadow: 0 0 2px #0e8cf1 !important;
                    }

                    .header_content .social ul > li > a {
                        font-size: 20px;
                        font-weight: 600;
                    }         

        .header_content .change-theme {
            cursor: pointer;
            width: 15%;
            display: block;
            position: relative;
        }

            .header_content .change-theme .theme-toggler {
                display: flex;
                align-items: center;
                justify-content: center;
            }

                .header_content .change-theme .theme-toggler span {
                    color: #8198ff;
                    text-shadow: 0 0 1em #8198ff;
                }

                .header_content .change-theme .theme-toggler .toggler {
                    height: 40px;
                    width: 100px;
                    border-radius: 50px;
                    background: #1f223e;
                    position: relative;
                    cursor: pointer;
                    margin: 0 10px;
                }

                    .header_content .change-theme .theme-toggler .toggler::before {
                        content: '';
                        position: absolute;
                        top: 7px;
                        left: 7px;
                        height: 25px;
                        width: 25px;
                        border-radius: 50%;
                        background: #8198ff;
                        box-shadow: 0 0 7px;
                        transition: .2s linear;
                    }

        .header_content .menu {
            position: relative;
            width: 58%;
        }

        .header_content .menu-responsive {
            display: none;
        }

        .menu__responsive {
            display: none;
        }

            .header_content .menu > ul {
                margin: 0;
                padding: 0;
                list-style-type: none;
                display: flex;
                width: 100%;
                justify-content: right;
            }

                .header_content .menu > ul > li {
                    color: #fff;
                    display: block;
                    float: left;
                    padding: 0.7rem;
                    position: relative;
                    text-decoration: none;
                    transition-duration: .5s;
                    margin: 0 15px;
                }

                .header_content .menu > ul > li:first-child {
                    margin-left: 0;
                }

                .header_content .menu > ul > li:last-child {
                    margin-right: 0;
                }

                    .header_content .menu > ul > li > a {
                        color: #fff;
                        font-size: 14px;
                        font-weight: 600;
                        cursor: pointer;
                    }

                        .header_content .menu > ul > li > a > i {
                            color: #88b1ff;
                            text-shadow: 0 0 3px #88b1ff;
                        }

                    .header_content .menu > ul > li:first-child > ul {
                        width: unset;
                    }

                        .header_content .menu > ul > li:first-child > ul > form {
                            display: flex;
                            width: 100%;
                            padding: 5px 12px;
                        }

                        .header_content .menu > ul > li:first-child > ul > form > input {
                            display: block;
                            position: relative;
                            background: #141627;
                            box-shadow: none;
                            border: none;
                            color: #fff;
                            margin-right: 7px;
                            border-radius: 7px;
                            width: 200px;
                        }

                        .header_content .menu > ul > li:first-child > ul > form > input::placeholder {
                            color: #adb5bd;
                        }

                        .header_content .menu > ul > li:first-child > ul > form > input:focus-visible {
                            border: none;
                            box-shadow: none;
                            outline: none;                        
                        }

                        .header_content .menu > ul > li:first-child > ul > form > button {
                            display: block;
                            position: relative;
                            background: #8198ff;
                            box-shadow: 0 0 1em #8198ff;
                            box-shadow: none;
                            border: none;
                            color: #fff;
                            padding: 8px 10px;
                            border-radius: 50%;
                            cursor: pointer;
                        }

                    .header_content .menu > ul > li > ul {
                        background-color: #141627;
                        border-radius: 15px;
                        transition: all .3s ease 0s;
                        position: absolute;
                        margin: 0;
                        padding: 7px 0 !important;
                        width: 250%;
                        list-style-type: none;
                        left: 50%;
                        margin-top: 25px;
                        transform: translate(-50%);
                        z-index: 999;
                        visibility: hidden;
                        display: block;
                        opacity: 0;
                    }

                    .header_content .menu>ul>li:hover>ul, .header_content .menu>ul>li>ul:hover {
                        display: block !important;
                        visibility: visible;
                        opacity: 1;
                        box-shadow: 10px 10px 10px rgb(0 0 0 / 20%);
                    }

                    .header_content .menu>ul>li>ul::before {
                        content: '';
                        border-color: transparent transparent #141627 transparent;
                        left: 50%;
                        margin-left: -10px;
                        bottom: 100%;
                        position: absolute;
                        border-style: solid;
                        border-width: 10px;
                    }

                    .header_content .menu>ul>li>ul>li {
                        clear: both;
                        width: 100%;
                    }

                    .header_content .menu>ul>li>ul>li>a {
                        padding: 10px 20px;
                        display: block !important;
                        margin: 0 !important;
                        transition: all .3s ease 0s;
                        font-size: 14px;
                    }

                    .header_content .menu>ul>li>ul>li>a:hover {
                        color: #88b1ff;
                        transition: all .3s ease 0s;
                        text-shadow: 0 0 3px #88b1ff;
                        padding-left: 30px;
                    }

                    .header_content .menu>ul>li>ul>li>a::before {
                        content: "";
                        background: #88b1ff;
                        border-radius: 50%;
                        height: 5px;
                        width: 5px;
                        display: inline-block;
                        position: relative;
                        top: -3px;
                        box-shadow: 0 0 3px #88b1ff;
                        margin-right: 10px;
                    }
                        

                

.container_block {
    max-width: 1580px;
    padding: 0 15px;
    margin: 0 auto;
    position: relative;
    transition: .2s linear;
}



.content {
    display: flex;
    width: 100%;
    background: #262947;
    margin: 55px 0;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 0 10px #262947;
}

    .content-list {
        width: 30%;
        height: 100vh;
        overflow-y: auto;
        overflow-x: hidden;
        position: sticky;
        top: 0;
        background-color: #1f223e;
        padding: 10px;
        border-radius: 20px;
    }

        .content-list hr {
            display: block;
            height: 1px;
            border: 0;
            border-top: 2px solid #303357;
            margin: 1em 0;
            padding: 0;
        }

        .content-list .content-list--search {
            display: flex;
            align-items: center;
            justify-content: center;
        }

            .content-list .content-list--search input {
                display: block;
                position: relative;
                background: #33375d;
                box-shadow: none;
                border: none;
                color: #fff;
                margin-right: 20px;
                border-radius: 10px;
                width: 60%;
                padding: 14px 12px;
            }

            .content-list .content-list--search input::placeholder {
                color: #adb5bd;
            }

            .content-list .content-list--search input:focus-visible {
                border: none;
                box-shadow: none;
                outline: none;                        
            }

            .content-list .content-list--search button {
                display: block;
                position: relative;
                background: #8198ff;
                box-shadow: 0 0 1em #8198ff;
                border: none;
                color: #fff;
                padding: 8px 10px;
                border-radius: 50%;
                cursor: pointer;
            }

        .content-list h1 {
            text-align: center;
        }

            .content-list h1 i {
                color: #88b1ff;
                text-shadow: 0 0 3px #88b1ff;
            }

        .content-list h2 {
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            text-shadow: 0 0 2px #fff;
            text-align: center;
        }

        .content-list ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .content-list ul > li {
            padding: 7px;
        }

        .content-list ul > li.active {
            background: #33375d;
            border-radius: 7px;
        }

        .content-list ul > li > a {
            color: #fff;
            font-size: 14px;
            transition: all .3s ease 0s;
        }

        .content-list ul > li > a::before {
            content: "";
            background: #88b1ff;
            border-radius: 50%;
            height: 5px;
            width: 5px;
            display: inline-block;
            position: relative;
            top: -3px;
            box-shadow: 0 0 3px #88b1ff;
            margin-right: 10px;
        }

    .content-display {
        width: 70%;
        padding: 20px;
        background: #1f223e;
        border-radius: 25px;
        margin-left: 35px;
    }

        .content-display > h1 {
            text-align: center;
        }

        .content-display > ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }

            .content-display > ul > li {
                padding: 7px;  
                color: #fff;
                font-size: 15px; 
            }

            .content-display > ul > li::before {
                content: "";
                background: #88b1ff;
                border-radius: 50%;
                height: 5px;
                width: 5px;
                display: inline-block;
                position: relative;
                top: -3px;
                box-shadow: 0 0 3px #88b1ff;
                margin-right: 10px;
            }

                .content-display > ul > li > ul {
                    padding: 15px 10px 10px 30px;
                    margin: 0;
                    list-style: none;
                }

                    .content-display > ul > li > ul > li {
                        padding: 7px;  
                        color: #fff;
                        font-size: 15px; 
                    }

                        .content-display > ul > li > ul > li::before {
                            content: "";
                            background: #88b1ff;
                            border-radius: 50%;
                            height: 2px;
                            width: 10px;
                            display: inline-block;
                            position: relative;
                            top: -5px;
                            box-shadow: 0 0 3px #88b1ff;
                            margin-right: 10px;
                        }

        .content-display > p {
            font-size: 17px;
            margin-top: 30px;
            margin-bottom: 30px;
            line-height: 1.9;
            font-family: "Open Sans", sans-serif;
            font-optical-sizing: auto;
            font-weight: 300;
            font-style: normal;
            font-variation-settings:
              "wdth" 100;
            color: #fff;
        }

        .content-display > hr {
            display: block;
            height: 1px;
            border: 0;
            border-top: 2px solid #303357;
            margin: 1em 0;
            padding: 0;
        }

        .content-display .navigate-links-article {
            display: block;
            position: relative;
            margin: 15px 0 30px 0;
        }

        .content-display .navigate-links-article-bottom {
            margin: 30px 0 15px 0;
        }

            .content-display .navigate-links-article > ul {
                padding: 0;
                margin: 0;
                list-style: none;
                width: 100%;
                display: flex;
                justify-content: space-between;
            }
        
                .content-display .navigate-links-article > ul > li {
                    margin: 10px;
                }
                
                .content-display .navigate-links-article > ul > .navigate-links-article-left {
                    margin-left: 0;
                }
                
                .content-display .navigate-links-article > ul > .navigate-links-article-right {
                    margin-left: auto;
                    margin-right: 0;
                }
        

                    .content-display .navigate-links-article > ul > li > a {
                        background: #84a4ff;
                        box-shadow: 0 3px 20px 0 #84a4ff;
                        transition: all .3s ease 0s;
                        border-radius: 20px;
                        height: 100%;
                        width: 100%;
                        padding: 12px 20px;
                    }

                    .content-display .navigate-links-article > ul > li > a:hover {
                        background: #6f6bff;
                        box-shadow: 0 3px 20px 0 #6f6bff;
                        transition: all .3s ease 0s;
                        color: #fff !important;
                    }

                    .codepen-code-snippet .code-snippet--title {
                        padding: 30px 25px;
                    }


.footer_header {
    background: #262947;
}

.footer_header_container {
    display: flex;
    width: 100%;
}

    .footer_header_container > div {
        width: 20%;
        position: relative;
    }

        .footer_header_container > div > h3 {
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            position: absolute;
            left: 50%;
            transform: translate(-50%);
        }
            .footer_header_container > div > h3::before {
                content: "";
                display: block;
                position: absolute;
                height: 3px;
                width: calc(100% + 20px);
                margin-left: -10px;
                background-image: -moz-linear-gradient(0deg, rgb(120 115 255) 0%, rgb(139 190 255) 100%);
                background-image: -webkit-linear-gradient(0deg, rgb(120 115 255) 0%, rgb(139 190 255) 100%);
                background-image: -ms-linear-gradient(0deg, rgb(120 115 255) 0%, rgb(139 190 255) 100%);
                box-shadow: 0 3px 30px 0 #8299ff;
                border-bottom-right-radius: 4px;
                border-bottom-left-radius: 4px;
                margin-top: -18px;
            }

            .footer_header_container > div > h3 > i {
                text-shadow: 0 0 3px #88b1ff;
                color: #88b1ff;
            }

        .footer_header_container > div > ul {
            list-style: none;
            margin: 55px 0 15px;
            padding: 0;
        }

            .footer_header_container > div > ul > li {
                padding: 7px;
            }

                .footer_header_container > div > ul > li > a {
                    color: #fff;
                    font-size: 14px;
                    transition: all .3s ease 0s;
                }

                    .footer_header_container > div > ul > li > a::before {
                        content: "";
                        background: #88b1ff;
                        border-radius: 50%;
                        height: 5px;
                        width: 5px;
                        display: inline-block;
                        position: relative;
                        top: -3px;
                        box-shadow: 0 0 3px #88b1ff;
                        margin-right: 10px;
                    }


.footer_bottom {
    background: #1f223e;
}

    .footer_bottom_container {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
        height: 70px;
        margin: 0 auto;
        position: relative;
    }

    .footer_bottom_container>.center {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
    }

    .footer_bottom_container>.left a {
        color: #88b1ff;
        transition: all .3s ease 0s;
        font-weight: 700;
    }

    .footer_bottom_container>.right>ul {
        display: flex;
        list-style: none;
    }

    .footer_bottom_container>.right>ul>li {
        padding: 0 25px;
        border-right: 1px solid #262947;
    }

    .footer_bottom_container>.right>ul>li:last-child {
        padding: 0 0 0 25px;
        border: none;
    }

    .footer_bottom_container>.right>ul>li>a>i {
        color: #88b1ff;
        text-shadow: 0 0 2px #88b1ff;
    }

    :root {
        --background--dark: #1f223e;
    }

    .btn-content-list {
        display: none;
    }