body {
    padding-bottom: 20px;
}
p{
text-indent:2em;
}
h1 {
    font-size: 32px; /* 设置H1的字体大小为32像素 */
}
h2 {
    font-size: 28px; /* 设置H2的字体大小为28像素 */
}
h3 {
    font-size: 24px; /* 设置H3的字体大小为24像素 */
}
h4 {
    font-size: 20px; /* 设置H4的字体大小为20像素 */
}
h5 {
    font-size: 16px; /* 设置H5的字体大小为16像素 */
}
/* Set padding to keep content from hitting the edges */
.body-content {
    padding-left: 15px;
    padding-right: 15px;
    margin-top: 10px; 
}
a {
    font-weight: 500;
    text-decoration: none;
    color:#3570b3;
}
nav{
    clear:both;
}
footer{
    text-align: center;
    margin-top: 3em ;
    border-top: #999 1px solid;
}
footer span{
    display: inline-block;
    margin:1em;
}
footer,
footer a{
    color:#777;
    font-size: 0.9em;
}
footer img{
    height:16px;
}

/* Set width on the form input elements since they're 100% wide by default */
input,
select,
textarea {
    max-width: 280px;
}
rd{
    color:red;
}
srd{
    color:red;
    font-weight:bold;
}
/* styles for validation helpers */
.field-validation-error {
    color: #b94a48;
}

.field-validation-valid {
    display: none;
}

input.input-validation-error {
    border: 1px solid #b94a48;
}

input[type="checkbox"].input-validation-error {
    border: 0 none;
}

.validation-summary-errors {
    color: #b94a48;
}

.validation-summary-valid {
    display: none;
}

.jumbotron {
    padding: 30px;
    margin-bottom: 30px;
    font-size: 21px;
    font-weight: 200;
    line-height: 2.1428571435;
    color: inherit;
    background-color: #eee;
}

.jumbotron h1 {
    line-height: 1;
    color: inherit;
}

.jumbotron p {
    line-height: 1.4;    
}

.container .jumbotron {
    border-radius: 6px
}

@media screen and (min-width: 768px) {
    .jumbotron {
        padding-top:48px;
        padding-bottom: 48px
    }

    .container .jumbotron {
        padding-right: 60px;
        padding-left: 60px
    }

    .jumbotron h1 {
        font-size: 63px
    }
}