style.css

.container {
    width: 90%;
    margin: 0.5em auto 0.5em;
}

div, li, dd, dt, td, select, textarea, input {
    font-family: 'NanumGothic', sans-serif;
    font-size: 15px;
    line-height: 1.7;
    word-break: keep-all;
}

ul, ol, dl, li, dd, dt, p, form, div {
    margin-block-start: 1.5em;
    margin-block-end: 1.5em;
}

hr {
    display: visible;
}

.img-wrapper {
    line-height: 0;
    display: block;
    width: 100%;
    padding: 1.5% 1.5% 1.5% 1.5%;
    border: 0.5px lightgray solid;
    margin: 1.5em auto 0 auto;
}

.img-wrapper > img {
    width: 668.7px;
}

img + img {
    margin-top: 0.5em;
}

table {
    table-layout: fixed;
    width: 100%;
    border-collapse: collapse;
    border: 1px solid lightgray;
}

th, td {
    border: 1px solid lightgray;
    padding: 10px;
    text-align: center;
}

th {
    background-color: rgb(229, 229, 229);
}

td {
    padding-left: 0.9em; 
}

th.p27 {
    background-color: rgb(229, 229, 229);
    width: 27%
}

th.light-head {
    background-color: lightgreen;
    padding-top: 0.2em;
    padding-bottom: 0.2em;
}

th strong {
    text-decoration: underline;
}

.tip-header::before {
    content: '';
    display: inline-block;
    vertical-align: sub;
    background-image: url("https://material.io/tools/icons/static/icons/baseline-info-24px.svg");
    background-size: 20px 20px;
    background-repeat: no-repeat;
    filter: invert(100%);
    height: 20px;
    width: 23px;
}

.tip-header {
    display: block;
    color: white;
    padding: 0.6em 1em;
    margin-top: 1.5em;
    margin-bottom: 0;
    box-sizing: border-box;
    background: #0095e9;
}

.tip {
    display: block;
    font-size: 15px;
    padding: 0.6em 1em;
    margin-top: 0;
    box-sizing: border-box;
    background: #9bdfff;
}

.tip > p:first-child {
    margin-top: 0;
    margin-bottom: 0;
}

kbd {
    font-family: unset;
}

samp {
    font-family: unset;
    font-weight: bold;
}