@font-face {
    font-family: "Source_Sans_Pro";
    src: url("/wp-content/themes/osc/common/fonts/Source_Sans_Pro/SourceSansPro-Regular.ttf");
}
@font-face {
    font-family: "Source_Serif_Pro";
    src: url("/wp-content/themes/osc/common/fonts/Source_Serif_Pro/SourceSerifPro-Regular.ttf");
}

body {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}
.letter {
    margin: 20px auto;
    width: 95%;
    max-width: 900px;
}
.header {
    width: 100%;
    height: auto;
    margin-bottom: 50px;
    display: block;
}
.body {
    max-width: 800px;
    margin: auto;
}
.signature {
    height: 80px;
    width: auto;
    display: block;
}

h1 { margin-top: 24px; margin-bottom: 8px; font-family: Source_Serif_Pro;font-size: 30pt; font-weight: bold; }
h2 { margin-top: 24px; margin-bottom: 8px; font-family: Source_Serif_Pro;font-size: 25pt; font-weight: bold; }
h3 { margin-top: 24px; margin-bottom: 8px; font-family: Source_Serif_Pro;font-size: 21pt;  }
h4 { margin-top: 24px; margin-bottom: 8px; font-family: Source_Serif_Pro;font-size: 19pt; text-decoration: underline; }
h5 { margin-top: 24px; margin-bottom: 8px; font-family: Source_Serif_Pro;font-size: 16pt; font-weight: bold; text-decoration: underline; }
h6 { margin-top: 24px; margin-bottom: 8px; font-family: Source_Serif_Pro; font-size: 16pt; }

p, ol, li, ul {
    font-family: Source_Serif_Pro;
    color: #222;
    line-height: 1.5;
    font-size: 16pt;
}
@media (max-width: 800px) {
    p, ol, li, ul {
        font-size: 12pt;
    }
}
hr {
    background: none;
    border: none;
    border-top: 1px solid #AAA;
    margin: 25px 0px;
}
a, a:visited {
    text-decoration: none;
    color: #1788ac;
}
a:hover {
    text-decoration: underline;
}
.footer {
    text-align: center;
    margin: 50px 0px 0px 0px;
    padding: 20px 0px 100px 0px;
    color: #CCC;
    background: #EEE;
}
.footer>a, .footer>a:visited {
    display: inline-block;
    padding: 7px;
    text-decoration: none;
    color: #666;
    font-family: Source_Sans_Pro;
}

img {
    width: 100%;
    height: auto;
}

table {
    width: 100%;
}
td:first-child {
    text-align: left;
}
th {
    font-weight: bold;
}
td, td {
    background: #F0F0F0;
    padding: 4px;
    text-align: center;
}
tr:nth-child(2n+1)>td, tr:nth-child(2n+1)>td {
    background: #FFF;
}