Estilo para modal genérica.

modal-generica.scss

.modal-mensagens {
	position: absolute;
	top: 0px;
	left: 0px;
	width: 100%;
	height: 100%;
	.backdrop-modal {
		background: rgba(0, 0, 0, 0.6);
		position: fixed;
		top: 0px;
		left: 0px;
		width: 100%;
		height: 100%;
		z-index: 98;
	}
	.content-modal {
		top: 50%;
		transform: translate(0px, -50%);
		position: fixed;
		background: #fff;
		max-width: 800px;
		margin: 0 15px;
		padding: 30px;
		border-radius: 4px;
		z-index: 99;
		.erro, .loading, .swamp {
			display: block;
			height: 40px;
			background: url(../../media/warning.png) no-repeat 50% 50%/40px;
			margin-bottom: 15px;
		}
		.loading {
			background-image: url(../../media/loading.gif);
			background-size: 100px;
		}
		.swamp {
			background-image: url(../../media/ico-swap.svg);
		}
		@media only screen and (min-width: 767px) {
			margin: 0 auto;
			left: 50%;
			transform: translate(-50%, -50%);
		}

		text-align: center;
		a {
			color: blue;
			font-weight: 800;
		}
		.imagem-status {
			display: block;
			margin: 0 auto;
			height: 84px;
			background: url(../../media/gift-ok.png) no-repeat 50% 50% /101px;
		}
		h3 {
			font-size: 36px;
			padding: 10px 0 30px 0;
			font-weight: 900;
		}
		p {
			font-size: 18px;
			line-height: 1.4;
			padding-bottom: 20px;
		}
		strong {
			font-weight: 800;
		}
		.btn-enviar {
			margin: 0 15px 15px 15px;
			opacity: 1;
			transition: background-color 200ms ease-in-out;
			&:hover {
				background-color: #777777;
			}
		}
		.fechar-modal {
			position: absolute;
			padding-top: 2px;
			top: -30px;
			right: 0px;
			font-weight: 800;
			padding-right: 30px;
			font-size: 16px;
			background: url(../../media/v2/ico-close.svg) no-repeat right 0 /16px;
			color: #fff;
			cursor: pointer;
		}
	}
    &.modal-loading {
        .content-modal {
            max-width: 320px;
            h3 {
                font-size: 26px;
            }
        }
    }
}