* {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: white;
    box-sizing: border-box;
}

body {
    background-color: #1e1e1e;
}

header {
    display: flex;
    height: 60px;
    width: 100%;
    padding: 0 10px;
    align-items: center;
    background-color: #000;
    justify-content: space-evenly;
}

.header-logo {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-image {
    height: 80%;
}

.logo-name {
    font-size: 1.75rem;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    font-weight: bold;
}

.header-link {
    display: flex;
    height: 100%;
}

.header-aria {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    height: 100%;
    justify-content: center;
    padding: 0 15px;
    cursor: pointer;
    transition: 0.3s ease;
    -webkit-user-select: none;
    user-select: none;
}

.header-aria-media {
    display: none;
    height: 100%;
    -webkit-user-select: none;
    user-select: none;
    align-items: center;
    justify-content: center;
}

.header-aria:hover {
    background-color: rgb(35, 50, 80);
}

.header-aria-name {
    font-size: 1.2rem;
    font-weight: bold;
    font-family: 'Roboto';
}

.header-aria-name {
    text-align: center;
}

#content {
    display: flex;
    justify-content: center;
}

#container {
    display: flex;
    width: 100%;
    max-width: 1080px;
    flex-direction: column;
    justify-content: center;
}

.title {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 15px;
    background: #0b0b0b;
}

.title img {
    height: 40px;
    margin-right: 7.5px;
}

.title span {
    font-size: 1.35rem;
    font-weight: 700;
}

.formula-title {
    padding: 20px;
    width: 100%;
    text-align: center;
    font-size: 1.5rem;
    font-family: 'MathJax_Math-italic';
    word-spacing: 5px;
    margin: 15px;
    box-shadow: inset 0px 0px 20px 20px black;
}

.formula-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    background: #1a1a1a;
}

.formula-container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.formula {
    padding: 0 20px;
    overflow: auto;
}

.comment {
    text-align: center;
    margin: 100px 0 50px 0;
    font-size: 1.5rem;
    font-weight: bold;
}

::-webkit-scrollbar {
    height: 8px;
    width: 10px;
    background-color: #121212;
}

::-webkit-scrollbar-thumb {
    background-color: #666;
    border-radius: 6px;
    border: 3px solid #121212;
}

::-webkit-scrollbar-thumb:hover{
    background-color: #555;
}

footer {
    display: flex;
    background: #111;
    justify-content: space-evenly;
    flex-wrap: wrap;
}

.footer-content {
    display: flex;
    align-items: center;
    max-width: 600px;
    text-align: justify;
    line-height: 1;
    padding: 30px;
}

.footer-text {
    color: white;
    font-size: 1rem;
    line-height: 2;
}

.footer-link {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.footer-aria {
    display: flex;
    align-items: center;
    text-decoration: none;
    height: 50%;
    padding: 20px 75px;
    justify-content: center;
    transition: 0.3s ease;
}

.footer-aria:hover {
    background-color: rgb(35, 50, 80);
}

.footer-aria-name {
    color: white;
    text-align: center;
    font-weight: bold;
    font-size: 1.1rem;
}

@media (max-width: 600px) {
    header {
        justify-content: space-around;
        padding: 0;
    }

    .header-logo {
        display: none;
    }

    .header-aria-media {
        display: flex;
    }

    .header-link {
        width: 100%;
        justify-content: space-evenly;
    }
}

@media (max-width: 420px) {
    header {
        padding: 0 5px 0 5px
    }

    .header-aria {
        padding: 0 10px;
    }

    .formula {
        font-size: 0.8rem !important;
    }
}