.flash {
    background-color: #d73455;
    border-radius: 6px;
    box-shadow: 0 .5em 1em -.125em rgba(10,10,10,.1),0 0 0 1px rgba(10,10,10,.02);
    color: #fff;
    display: block;
    padding: 1.25rem; 
    width: calc(100% - 6rem);
    margin: 2rem auto;

    .header {
        font-weight: 800;
    }
}