@charset "utf-8";


html {
    font-size: 16px
}

<!--文字色定義-->
body {
    color: #666666;
    font-family: sans-serif;
    letter-spacing: 2px;
    margin: 0;
    min-width: 1024px;
}


h1 {
    margin: 0;
}

h2 {
    font-size: 3rem;
    font-family: Arial, sans-serif;
    color: #000000;
    border-left: 30px solid #d7301d;
    border-radius: 10px 0 0 10px;
    padding-left: 10px;
}

strong {
    font-weight: normal;
    color:red;
}
footer {
    text-align: center;
    background-color: #486b0b;
    color: #ffffff;
    padding: 30px 0;
}

p {
    line-height: 2;
}

header {
    border-bottom: 5px dotted #d7301d;
    padding: 30px 0;
}

main {
    padding: 30px 0;
}

.header_box,
.main_box,
.footer_box {
    width: 1024px;
    margin: 0 auto;
}







td,
th {
    border: 1px solid #486b0b;
    padding: 5px 30px;
}

th {
    color: #486b0b;
}

table {
    border-collapse: collapse;
    margin-bottom: 30px;
}

.item {
    width: 280px;
    margin-bottom: 30px;
}

.item_box {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.item img {
    border-radius: 30%;
}

ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    width: 600px;
    justify-content: space-between;
}

.header_box {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

ul a:link {
    color: #000000;
    text-decoration: none;
    padding: 10px;
}

ul a:visited {
    color: #000000;
    padding: 10px;
}

ul a:hover {
    color: #ffffff;
    padding: 10px;
    background-color: #486b0b;
    border-radius: 50%;
}

ul a {
    transition-duration: 1s;
}
em {
    color: yellow;
    font-size: 20px;
}