/*先頭に「.」が付いているものは消さないでください*/

html, ul, ol, dl, li, dt, dd, p, div, span, img, a, table, tr, th, td {
    margin: 0;
    padding: 0;
    border: 0;
    font-weight: normal;
    font-size: 100%;
    vertical-align: baseline;
}

article, header, footer, aside, figure, figcaption, nav, section {
    display: block;
}

body {
    line-height: 1.5;
    -ms-text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
    background-color: #252525;
    margin: 0;
    padding: 0;
    border: 0;
    font-weight: normal;
    font-size: 100%;
    vertical-align: baseline;
    color: #121212;
    overflow-x: hidden;
}

h1 {
    font-size: 2rem;
}

.main {
    font-family: sans-serif;
    width: 756px;
    margin: 15px auto;
}

@media screen and (max-width: 1920px) {
    .main {
        font-family: sans-serif;
        width: 756px;
        margin: 15px auto;
    }
}


@media screen and (max-width: 1600px) {
    .main {
        font-family: sans-serif;
        width: 756px;
        margin: 15px auto;
    }
}

@media screen and (max-width: 1365px) {
    .main {
        font-family: sans-serif;
        width: 756px;
        margin: 15px auto;
        padding-right: 20px;
        padding-left: 20px;
    }
}

@media screen and (max-width: 780px) {
    .main {
        font-family: sans-serif;
        width: 100%;
        margin: auto;
        padding: 0px;
    }
}

.header {
    box-sizing: border-box;
    background-color: #dbdbdb;
    min-height: 200px;
    border-radius: 20px;
    padding: 10px 45px 20px;
    margin-bottom: 10px;
}

@media screen and (max-width: 780px) {
    .header {
        box-sizing: border-box;
        min-height: 100px;
        border-radius: 0px;
        padding: 10px 15px 20px;
        margin: 10px 0px;
    }
}

.header h1 {
    font-family: serif;
}

.article {
    margin-top: 10px;
    box-sizing: border-box;
    background-color: #dbdbdb;
    border-radius: 20px;
    padding: 20px 0px;
}

@media screen and (max-width: 780px) {
    .article {
        box-sizing: border-box;
        margin-top: 10px;
        padding: 0;
        border-radius: 0px;
    }
}

.atcinside {
    padding-left: 20px;
    padding-right: 20px;
}

@media screen and (max-width: 780px) {
    .atcinside {
        padding: 20px;
    }
}

.atcinside h1 {
    font-size: 1.7rem;
    color: #252525;
}

.atcinside h2 {
    font-size: 1.4rem;
    color: #252525;
}

.atcinside img {
    max-width: 100%;
}

.list_content {
    padding-left: 20px;
    padding-right: 20px;
}

.list_content h1 {
    font-size: 1.4rem;
}

@media screen and (max-width: 780px) {
    .list_content h1 {
        font-size: 1.25rem
    }
}

.list_content h1 a:link {
    color: #404040;
}

.list_content h1 a:hover {
    color: #707070;
    text-decoration: none;
}

.list_content h1 a:visited {
    color: #404040;
}

a:link {
    text-decoration: none;
    color: #0088cc;
}

a:hover {
    text-decoration: underline;
    color: #0088cc;
}

a:visited {
    text-decoration: none;
    color: #7619c2;
}

a:active {
    text-decoration: underline;
    color: #333194;
}

pre {
    overflow: auto;
    padding-left: 20px;
    border-radius: 10px;
}

code {
    font-family: Consolas, 'DejaVu Sans Mono', monospace;
    font-size: 90%;
}

ul, ol {
    margin-left: 30px;
}

.olc {
    font-family: Consolas, 'DejaVu Sans Mono', monospace;
    color: white;
    background-color: #252525;
    font-size: 90%;
    margin: 0px 5px;
    padding: 1px 3px;
    border-radius: 2px;
}

table {
    width: 100%;
    table-layout: fixed;
}

table, th, td {
    border-collapse: collapse;
    border: solid 1px #121212;
}

th, td {
    padding: 5px;
    text-align: center;
}

.tweetbutton {
    color: white;
    background-color: #0088cc;
    font-size: 90%;
    padding: 3px 5px;
    border-radius: 4px;
    cursor: pointer;
}

.footer {
    box-sizing: border-box;
    background-color: #dbdbdb;
    min-height: 84px;
    border-radius: 20px;
    margin: 10px 0px;
    padding: 20px;
}

@media screen and (max-width: 780px) {
    .footer {
        box-sizing: border-box;
        border-radius: 0px;
    }
}