.callout {
    padding: 20px;
    margin: 20px 0;
    border: 1px solid #eee;
    border-left-width: 6px !important;
    border-radius: 3px;
}
.book.color-theme-1 .callout {
    border: 1px solid #ebdaa5;
}
.book.color-theme-2 .callout {
    border: 1px solid #2f3549;
}
.callout h4 {
    margin-top: 0;
    margin-bottom: 1em;
}
.callout p:last-child {
    margin-bottom: 0;
}
.callout code {
    border-radius: 3px;
}
.callout+.callout {
    margin-top: -5px;
}
.callout-default {
    border-left-color: #777 !important;
}
.callout-default h4 {
    color: #777 !important;
}
.callout-primary {
    border-left-color: #428bca !important;
}
.callout-primary h4 {
    color: #428bca !important;
}
.callout-success {
    border-left-color: #5cb85c !important;
}
.callout-success h4 {
    color: #5cb85c !important;
}
.callout-danger {
    border-left-color: #d9534f !important;
}
.callout-danger h4 {
    color: #d9534f !important;
}
.callout-warning {
    border-left-color: #f0ad4e !important;
}
.callout-warning h4 {
    color: #f0ad4e !important;
}
.callout-info {
    border-left-color: #5bc0de !important;
}
.callout-info h4 {
    color: #5bc0de !important;
}