:root {
    --primary-color: #007bff;
    --secondary-color: #939393;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white-color: #fff;
    --black-color: #000;
    --primary-text-color: #212529;
}

#header {
    background: rgb(255, 255, 255);
    background: linear-gradient(180deg, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 1) 74%, rgba(255, 255, 255, 0) 100%);
}

#header__logo {
    height: 100px;
}

#site_logo {
    position: fixed;
}

#site_logo > p {
    text-transform: uppercase;
    background: linear-gradient(45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: logoanimate 5s ease-in-out infinite;
    line-height: 0.9;
    font-size: 30px;
    font-weight: 900;
    margin-bottom: 0px;
}

.user_menu {
    position: fixed;
    bottom: 0;
    margin-bottom: 20px;
}

.categories_list {
    position: fixed;

}

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

.post_list_item {
    margin-bottom: 40px;
}

@keyframes logoanimate {
    0% {
        background-position: 0 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0 50%;
    }
}

h4.post_list_item__title {
    color: var(--primary-text-color);
}

.post_list_item__title {
    font-size: 24px;
}

.post_list_item__date {
    font-size: 14px;
    color: var(--secondary-color);
}

.post__meta__date {
    color: var(--secondary-color);
}

.post__title {
    margin-block: 20px 80px;
}


.category__title {
    margin-bottom: 80px;
}

.post_part {
    margin-bottom: 60px;
}

.post_part h2 {
    margin-bottom: 30px;
}

#single_article {
    max-width: 800px;
}

@media (max-width: 768px) {
    #header__logo {
        position: relative;
    }

    #header__logo > p {
        font-size: 24px;
        margin-block: 0px;
    }
}

.login__modal {
    position: fixed;
    z-index: 1000;
    background-color: rgba(255, 255, 255, .6);
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
}

#login__form form {
    margin: 0px auto;
    margin-top: 100px;
    background-color: var(--white-color);
    border-radius: 5px;
    height: auto;
    max-width: 500px;
    box-shadow: 0 0 10px rgba(0, 0, 0, .1);
}

@media (max-width: 576px) {
    div#page {
        padding-top: 0px;
    }

    div#content {
        margin-top: 100px;
    }

    #header {
        position: fixed;
        padding-top: 10px !important;
    }

    #header__logo > p {
        margin-block: 0px;
    }

    .categories_list {
        height: 0px;
        overflow: hidden;
        z-index: 1000;
        background-color: #fff;
    }
}