body {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    font-size: 100%;
    background-color: #FFFFFF;
    padding: 0 1em;
}

div.main {
    flex: 1;
    width: 60%;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

div.info {
    text-align: center;
    padding: 1em;
    border-top: 1px solid lightgray;
}

html {
    height: 100%;
}

img {
    max-width: 100%;
    height: auto;
    border: 0;
}

* {
    font-size: 1em;
    line-height: 1.2em;
}

a:link, a:visited {
    color: #064FC7;
}

a:active, a:hover {
    color: #0000FF;
}

h1 {
    margin: 1em 0;
    font-size: 210%;
    font-weight: normal;
    padding-bottom: 0.1em;
}

td.content {
    padding: 0 20px 3em 2em;
}

h2 {
    font-weight: normal;
    font-size: 160%;
    margin-top: 2em;
}

.inline-form {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.inline-form .input-item {
    flex: 1;
}

.inline-form input[type="text"] {
    width: 100%;
    padding: 8px;
    font-size: 16px;
}

.inline-form input[type="submit"] {
    padding: 8px 16px;
    font-size: 16px;
    cursor: pointer;
    margin-left: auto;
}

.abbreviation-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 10px;
}

.abbreviation-item {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px;
}

.abbreviation-item:hover {
    background: #efefef;
}

.abbreviation-ini {
    flex: 1;
    font-weight: bold;
    flex: 0 0 20%;
    max-width: 25%;
}

.abbreviation-def {
    flex: 2;
}

.info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 1em;
    border-top: 1px solid lightgray;
}

.info-text {
    flex: 1;
}

.info-link {
    flex: 0 0 auto;
}

.info-link img {
    height: 40px;
    transition: transform 0.2s ease;
}

.info-link img:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    body {
        padding: 0.5em 1em;
        font-size: 100%;
    }

    div.main {
        width: 100%;
        padding: 1em;
        box-sizing: border-box;
    }

    div.info {
        text-align: center;
        padding: 1em;
        border-top: 1px solid lightgray;
    }

    h1 {
        font-size: 180%;
        margin-top: 1em;
        margin-bottom: 0.5em;
    }

    .abbreviation-list {
        padding: 5px 0 5px 0;
        gap: 8px;
    }

    .abbreviation-item {
        flex-direction: column;
        padding: 8px 0 8px 0;
        gap: 5px;
    }

    .abbreviation-ini {
        flex: 0 0 auto;
        font-size: 95%;
        max-width: 100%;
    }

    .abbreviation-def {
        flex: 0 0 auto;
        font-size: 90%;
        width: 100%;
    }
}