style.css

body {
    overflow-x: hidden;
}

#noti {
    display: none;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1C1C1C;
    color: #FBFBFB;
    position: absolute;
    width: 380px;
    padding: 15px 15px;
    padding-bottom: 18px;
    border-radius: 8px;
    transition-duration: 150ms;
    user-select: none;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.571);
    position: absolute;
    right: 10px;
    bottom: 10px;


    animation-name: noti;
    animation-duration: 600ms;
    animation-iteration-count: 1;
    animation-timing-function: ease;
}

#noti:hover {
    background-color: #1f1f1f;
}

#noti:active {
    transform: scale(0.95);
}

#noti .top {
    display: flex;
    justify-content: space-between;
}

#noti .top img {
    width: 20px;
}

#noti .main {
    margin-top: 20px;
}

.dismiss-button {
    display: block;
    margin-top: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #292929;
    color: #FBFBFB;
    width: 100%;
    padding: 8px 0;
    border: 1px solid hsla(0, 0%, 98%, 0.13);
    border-radius: 4px;
    cursor: pointer;
    transition-duration: 200ms;
}

.dismiss-button:hover {
    background-color: #2c2c2c;
}

@keyframes noti {
    0% {
        right: -400px;

    }
    
    100% {
        right: 10px;

    }
}