app/assets/stylesheets/sass/components/_errors.scss
div#flash_notice.flash_message{
background-color: rgba($color-btns, .3);
background-image: url('valid.png');
background-size: 2rem;
background-repeat: no-repeat;
border: 1px solid $color-btns;
border-radius: 6px;
color: $color-black;
width: 33%;
height: 30px;
margin: 0 auto;
display: flex;
justify-content: center;
align-items: center;
}