AdGuardHome/client/src/components/Toasts/Toast.css

.toasts {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 105;
    width: 345px;
}

@media (max-width: 425px) {
    .toasts {
        right: 0;
        width: 100%;
    }
}

.toast {
    display: flex;
    align-items: flex-start;
    margin-bottom: 12px;
    padding: 16px;
    font-weight: 600;
    color: #ffffff;
    border-radius: 4px;
    background-color: rgba(236, 53, 53, 0.75);
}

.toast--success {
    background-color: rgba(90, 173, 99, 0.75);
}

.toast:last-child {
    margin-bottom: 0;
}

.toast__content {
    flex: 1 1 auto;
    margin: 0 12px 0 0;
    text-overflow: ellipsis;
    overflow: hidden;
}

.toast__content a {
    font-weight: 600;
    color: #fff;
    text-decoration: underline;
}

.toast__dismiss {
    display: block;
    flex: 0 0 auto;
    padding: 0;
    background: transparent;
    border: 0;
    cursor: pointer;
}

.toast__dismiss:hover,
.toast__dismiss:focus {
    outline: none;
}

.toast-enter {
    opacity: 0.01;
}

.toast-enter-active {
    opacity: 1;
    transition: all 0.3s ease-out;
}

.toast-exit {
    opacity: 1;
}

.toast-exit-active {
    opacity: 0.01;
    transition: all 0.3s ease-out;
}