style.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');

body {
    margin: 0;
	font-family: 'Poppins', sans-serif;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 100vh;
	background: #1C1D22;
}
button{
    padding: 10px;
}

.notifications {
	position: fixed;
	top: 30px;
	right: 20px;
}
.toast{
    position: relative;
    padding: 10px;
    margin-bottom: 10px;
    color: #fff;
    width: 400px;
    display: grid;
    grid-template-columns: 70px 1fr 70px;
    border-radius: 5px;
    --color: #0abf30;
    background-image: linear-gradient(to right, #0abf3055, #22242F 30%);
    animation: show_toast 0.3s ease forwards;
}
.toast i{
    color: var(--color);
}
.toast .title{
    font-size: x-large;
    font-weight: bold;
}
.toast i{
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: x-large;
}
.toast span,
.toast .close{
    opacity: 0.6;
    color: #fff
}

@keyframes show_toast {
	0% {
		transform: translateX(100%);
	}
	40% {
		transform: translateX(-5%);
	}
	80% {
		transform: translateX(0%);
	}
	100% {
		transform: translateX(-10%);
	}
}
.toast::before{
    position: absolute;
    bottom: 0;
    left: 0;
    background-color: var(--color);
    box-shadow: 0 0 10px var(--color);
    content: '';
    width: 100%;
    height: 3px;
    animation: timeOut 5s linear 1 forwards;
}
@keyframes timeOut{
    to{
        width: 0%;  
    }
}
/* error */
.toast.error{
   --color: #f24d4c;
   background-image: linear-gradient(to right, #f24d4c55, #22242F 30%);
}
/* warning */
.toast.warning{
    --color: #e9bd0c;
    background-image: linear-gradient(to right, #e9bd0c55, #22242F 30%);
}
/* info */
.toast.info{
    --color: #3498db;
    background-image: linear-gradient(to right, #3498db55, #22242F 30%);
}